IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Natural convection heat transfer oscillatory flow of an elastico viscous flui...eSAT Journals
Abstract This paper examines the problem of two dimensional unsteady free convection oscillatory flow of an Elastico-viscous fluid past an impulsively started infinite vertical plate with constant heat flux and heat generation. The flow is subjected to a constant suction. Using perturbation techniquethe expressions are obtained for velocity, temperature distribution and skin friction. The results obtained are discussed for various numerical values of the parameters entered into the equations governing the flow, with help of graphs.
Radiation Effects on MHD Free Convective Rotating Flow with Hall EffectsIJERA Editor
In this paper, we have studied the unsteady an incompressible MHD rotating free convection flow of Viscoelastic fluid through a porous medium with simultaneous heat and mass transfer near an infinite vertical oscillating porous plate under the influence of uniform transverse magnetic field. The governing equations of the flow field are solved by a regular perturbation method for small elastic parameter. The expressions for the velocity, temperature, concentration have been derived analytically and also its behaviour is computationally discussed with reference to different flow parameters with the help of graphs. The skin friction, the Nusselt number and the Sherwood number are also obtained and their behaviour discussed.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Soret Effect And Effect Of Radiation On Transient Mhd Free Convective Flow Ov...inventionjournals
The present paper is concerned to analyze the radiation, Magneto hydrodynamic and soret effects on unsteady flow heat and mass transfer characteristics in a viscous, incompressible and electrically conduction fluid over a semi-infinite vertical porous plate through porous media the porous plate is subjected to a transverse variable suction velocity. The transient, non linear and coupled dimensionless governing equations for this investigation are solved analytically using perturbation technique about a small parameter . the effects of governing parameters on the flow variables are discussed graphically.
OSCILLATORY FLOW OF MHD POLAR FLUID WITH HEAT AND MASS TRANSFER PAST A VERTIC...IAEME Publication
The study of unsteady two-dimensional laminar boundary layer flow of a viscous incompressible fluid (polar fluid) through porous medium past a semi-infinite vertical porous stretching plate in the presence of transverse magnetic field is investigated.
The sheet makes with a constant velocity in the longitudinal direction and the free stream velocity follows an exponentially increasing or decreasing small perturbation law. A uniform magnetic field acts perpendicularly to the porous sheet which absorbs the polar fluid with a suction velocity varying with time component. The effects of all parameters encountering in the problem are investigated for velocity and temperature fields across the boundary layer.
The Study of Heat Generation and Viscous Dissipation on Mhd Heat And Mass Dif...IOSR Journals
The present work is devoted to the numerical study of magneto hydrodynamic (MHD) natural convection flow of heat and mass transfer past a plate taking into account viscous dissipation and internal heat generation. The governing equations and the associated boundary conditions for this analysis are made non dimensional forms using a set of dimensionless variables. Thus, the non dimensional governing equations are solved numerically using finite difference method Crank-Nicolson’s scheme. Numerical outcomes are found for different values of the magnetic parameter, Modified Grashof number, Prandtl number, Eckert number, heat generation parameter and Schmidt number for the velocity and the temperature within the boundary layer as well as the skin friction coefficients and the rate of heat and mass transfer along the surface. Results are presented graphically with detailed discussion.
Thermal Effects in Stokes’ Second Problem for Unsteady Second Grade Fluid Flo...IOSR Journals
In this paper, we investigated the effects of magnetic field and thermal in Stokes’ second problem for unsteady second grade fluid flow through a porous medium. The expressions for the velocity field and the temperature field are obtained analytically. The effects of various pertinent parameters on the velocity field and temperature field are studied through graphs in detail.
Natural convection heat transfer oscillatory flow of an elastico viscous flui...eSAT Journals
Abstract This paper examines the problem of two dimensional unsteady free convection oscillatory flow of an Elastico-viscous fluid past an impulsively started infinite vertical plate with constant heat flux and heat generation. The flow is subjected to a constant suction. Using perturbation techniquethe expressions are obtained for velocity, temperature distribution and skin friction. The results obtained are discussed for various numerical values of the parameters entered into the equations governing the flow, with help of graphs.
Radiation Effects on MHD Free Convective Rotating Flow with Hall EffectsIJERA Editor
In this paper, we have studied the unsteady an incompressible MHD rotating free convection flow of Viscoelastic fluid through a porous medium with simultaneous heat and mass transfer near an infinite vertical oscillating porous plate under the influence of uniform transverse magnetic field. The governing equations of the flow field are solved by a regular perturbation method for small elastic parameter. The expressions for the velocity, temperature, concentration have been derived analytically and also its behaviour is computationally discussed with reference to different flow parameters with the help of graphs. The skin friction, the Nusselt number and the Sherwood number are also obtained and their behaviour discussed.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Soret Effect And Effect Of Radiation On Transient Mhd Free Convective Flow Ov...inventionjournals
The present paper is concerned to analyze the radiation, Magneto hydrodynamic and soret effects on unsteady flow heat and mass transfer characteristics in a viscous, incompressible and electrically conduction fluid over a semi-infinite vertical porous plate through porous media the porous plate is subjected to a transverse variable suction velocity. The transient, non linear and coupled dimensionless governing equations for this investigation are solved analytically using perturbation technique about a small parameter . the effects of governing parameters on the flow variables are discussed graphically.
OSCILLATORY FLOW OF MHD POLAR FLUID WITH HEAT AND MASS TRANSFER PAST A VERTIC...IAEME Publication
The study of unsteady two-dimensional laminar boundary layer flow of a viscous incompressible fluid (polar fluid) through porous medium past a semi-infinite vertical porous stretching plate in the presence of transverse magnetic field is investigated.
The sheet makes with a constant velocity in the longitudinal direction and the free stream velocity follows an exponentially increasing or decreasing small perturbation law. A uniform magnetic field acts perpendicularly to the porous sheet which absorbs the polar fluid with a suction velocity varying with time component. The effects of all parameters encountering in the problem are investigated for velocity and temperature fields across the boundary layer.
The Study of Heat Generation and Viscous Dissipation on Mhd Heat And Mass Dif...IOSR Journals
The present work is devoted to the numerical study of magneto hydrodynamic (MHD) natural convection flow of heat and mass transfer past a plate taking into account viscous dissipation and internal heat generation. The governing equations and the associated boundary conditions for this analysis are made non dimensional forms using a set of dimensionless variables. Thus, the non dimensional governing equations are solved numerically using finite difference method Crank-Nicolson’s scheme. Numerical outcomes are found for different values of the magnetic parameter, Modified Grashof number, Prandtl number, Eckert number, heat generation parameter and Schmidt number for the velocity and the temperature within the boundary layer as well as the skin friction coefficients and the rate of heat and mass transfer along the surface. Results are presented graphically with detailed discussion.
Thermal Effects in Stokes’ Second Problem for Unsteady Second Grade Fluid Flo...IOSR Journals
In this paper, we investigated the effects of magnetic field and thermal in Stokes’ second problem for unsteady second grade fluid flow through a porous medium. The expressions for the velocity field and the temperature field are obtained analytically. The effects of various pertinent parameters on the velocity field and temperature field are studied through graphs in detail.
This document summarizes a study that examines heat and mass transfer over a vertical plate in a porous medium with Soret and Dufour effects, a convective surface boundary condition, chemical reaction, and magnetic field. The governing equations for the fluid flow, heat transfer, and mass transfer are presented. Similarity solutions are used to transform the governing partial differential equations into ordinary differential equations, which are then solved numerically. The results are presented graphically to show the influence of various parameters on velocity, temperature, concentration, skin friction, Nusselt number, and Sherwood number.
The Effect of Hall Current on an Unsteady MHD Free Convective Flow along a Ve...iosrjce
In this paper we investigate the effect of hall current on an unsteady magnetohydrodynamic free
convective flow along a vertical porous plate with thermal radiation. The dimensionless governing coupled,
non-linear boundary layer partial differential equations are solved by an efficient finite element method for
velocity, temperature, concentration field and also the expression for shearing stress, Nusselt number and
Sherwood number are obtained. The effect of thermal Grashof Number, solutal Grashof Number, Transpiration
cooling parameter, Prandtl Number, Schmidt Number, Hartmann number, Thermal radiation parameter, Eckert
number and Hall parameter on the flow field are shown through graphs and tables.
This document summarizes a study that investigated the effects of Hall current, chemical reaction, and viscous dissipation on unsteady magnetohydrodynamic (MHD) flow, heat, and mass transfer along a porous flat plate. The governing equations were solved numerically using the Galerkin finite element method. Parameters like the magnetic field, Prandtl number, Schmidt number, and modified Grashof numbers for heat and mass transfer were varied to examine their impacts on velocity, temperature, and other variables. The results provide insight into complex coupled transport processes with potential applications in areas like material processing, energy systems, and industrial equipment.
Heat Transfer on Steady MHD rotating flow through porous medium in a parallel...IJERA Editor
We discussed the combined effects of radiative heat transfer and a transverse magnetic field on steady rotating flow of an electrically conducting optically thin fluid through a porous medium in a parallel plate channel and non-uniform temperatures at the walls. The analytical solutions are obtained from coupled nonlinear partial differential equations for the problem. The computational results are discussed quantitatively with the aid of the dimensionless parameters entering in the solution.
Homotopy Analysis to Soret and Dufour Effects on Heat and Mass Transfer of a ...iosrjce
The objective of this paper is to study the Soret and Dufour effects on the free convection boundary
layer flow of an incompressible, viscous and chemically reacting fluid over a vertical plate in the presence of
viscous dissipation. The governing partial differential equations are converted to a set of ordinary differential
equations using suitable similarity transformations. The resulting equations are solved analytically using
homotopy analysis method (HAM). The convergence of obtained analytical solutions is explicitly discussed. The
effects of various parameters on dimensionless velocity, temperature and concentration profiles are discussed
with the help of graphs. The numerical values of skin friction, Nusselt number and Sherwood number for
different parameters are presented in tabular form. Our results are compared with the previously published
results and are found to be in good agreement.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Effects of Hall and thermal on MHD Stokes’ second problem for unsteady second...IJERA Editor
In this paper, we investigated the combined effects of Hall and thermal on MHD Stokes’ second problem for
unsteady second grade fluid flow through porous medium. The expressions for the velocity field and the
temperature field are obtained analytically. The effects of various pertinent parameters on the velocity field and
temperature field are studied in detail with the aid of graphs.
Effect of Radiation on Mixed Convection Flow of a Non-Newtonian Nan fluid ove...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
28Dufour effect on radiative effect flow and heat transfer over a vertically ...IRJET Journal
The document discusses radiative heat transfer over a vertically oscillating porous flat plate embedded in a porous medium with an oscillating surface temperature. It presents the governing equations for momentum, energy and concentration of the two-dimensional flow. Dimensionless parameters are introduced and the equations are non-dimensionalized. Parameters like the Darcy number, radiation parameter, magnetic parameter, Dufour number, Grashof numbers and others are defined. The effects of these parameters on velocity, temperature and concentration profiles are analyzed through graphs.
This document provides an abstract for a research article on magnetohydrodynamic mixed convection micro polar flow through a porous medium driven by a porous stretching sheet. The following key points are discussed:
- Governing partial differential equations are derived and numerically solved using finite element analysis to study the effects of various parameters on velocity, micro rotation, and temperature profiles.
- Parameters investigated include the Hartmann number, Darcy parameter, surface conditions, and their impact on the fluid flow is explored.
- The study aims to provide insights applicable to processes involving polymer sheet stretching and controlled cooling/heating of strips or filaments during manufacturing.
Numerical analysis of dynamic viscosity effect associated with a continuously...Alexander Decker
This document presents a numerical study of the effects of varying dynamic viscosity coupled with viscous energy dissipation on convective heat transfer in a fluid-filled rectangular cavity. The cavity contains a continuously moving heated horizontal plate and is bounded by fixed walls. The governing equations for momentum, energy and vorticity are solved using the finite difference method for different fluids at varying dynamic viscosities and heat capacities. The results show that increasing dynamic viscosity decreases velocity and increasing specific heat capacity affects energy distribution and heat transfer rates. These findings provide useful baseline data for manufacturing processes involving continuous moving surfaces like wire drawing and rolling.
Non-Darcy Convective Heat and Mass Transfer Flow in a Vertical Channel with C...IJERA Editor
In this paper, We made an attempt to study thermo-diffusion and dissipation effect on non-Darcy convective
heat and Mass transfer flow of a viscous fluid through a porous medium in a vertical channel with Radiation and
heat sources. The governing equations of flow, heat and mass transfer are solved by using regular perturbation
method with δ, the porosity parameter as a perturbation parameter. The velocity, temperature, concentration,
shear stress and rate of Heat and Mass transfer are evaluated numerically for different variations of parameter.
Abstract— A scientific investigation is created to examine the nonlinear unfaltering blended convection limit
layer stream and warmth exchange of an incompressible digression hyperbolicnon-Newtonian liquid from a
non-isothermal wedge in the nearness of attractive field. The changed preservation conditions are understood
numerically subject to physically fitting limit conditions utilizing a second-arrange precise verifiable limited
distinction Keller Box method. The numerical code is accepted with past studies. The impact of various rising
non-dimensional parameters, to be specific Weissenberg number (We), power law record (n), blended
convection parameter, weight angle parameter (m), Prandtl number (Pr), Biot number, attractive parameter
(M)and dimensionless extraneous direction on speed and temperature development in the limit layer
administration are inspected in subtle element. Moreover, the impacts of these parameters on surface warmth
exchange rate and nearby skin erosion are additionally examined. Approval with prior Newtonian studies is
introduced and amazing relationship accomplished. It is found that speed is lessened with expanding We,
while, temperature is increased. Expanding n improves speed yet diminishes temperature, a comparable
pattern was seen. An expanding M is found to decline speed however temperature increments.
Keywords— Magnetic parameter, Mixed Convection parameter, Non-Newtonian digression hyperbolic liquid,
power law index, Weissenberg number, Weight inclination parameter.
This document summarizes a research article that investigates the steady, two-dimensional Falkner-Skan boundary layer flow over a stationary wedge with momentum and thermal slip boundary conditions. The flow considers a temperature-dependent thermal conductivity in the presence of a porous medium and viscous dissipation. Governing partial differential equations are non-dimensionalized and transformed into ordinary differential equations using similarity transformations. The equations are highly nonlinear and cannot be solved analytically, so a numerical solver is used. Numerical results are presented for the skin friction coefficient, local Nusselt number, velocity and temperature profiles for varying parameters like the Falkner-Skan parameter and Eckert number.
Effects of Variable Viscosity and Thermal Conductivity on MHD free Convection...theijes
This document summarizes a study that numerically investigates the effects of variable viscosity and thermal conductivity on magnetohydrodynamic (MHD) free convection and mass transfer flow over an inclined vertical surface in a porous medium with heat generation. The governing equations are reduced to ordinary differential equations using similarity transformations and then solved numerically using a shooting method. The results show that increasing the viscosity variation parameter, thermal conductivity parameter, magnetic parameter, permeability parameter, or Schmidt number decreases the fluid velocity, while increasing the heat generation parameter, local Grashof number, or mass Grashof number increases the fluid velocity. Skin friction, Nusselt number, and Sherwood number are also computed and presented in tabular form.
This document summarizes a research paper that examines the steady magnetohydrodynamic mass transfer flow of a polar fluid through a porous medium bounded by an infinite vertical porous plate. The paper presents the governing equations for the fluid flow, angular momentum, energy, and concentration considering effects such as magnetic field, thermal diffusion, and radiation. Exact solutions for the velocity, angular velocity, temperature, and concentration fields are obtained. The skin friction and heat transfer rate are also derived. Graphs illustrate the effects of various parameters on the flow behavior and transport properties.
Modeling And Analytical Simulation Of Heat And Mass Transfer In The Flow Of A...iosrjce
IOSR Journal of Mathematics(IOSR-JM) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mathemetics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mathematics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
NATURAL CONVECTION HEAT TRANSFER IN INCLINED OPEN ANNULUS PASSEGE HEATED FROM...IAEME Publication
Natural convection is investigated experimentally in an open cylindrical annulus heated with both annulus inner and outer sides under same constant heat flux condition to study the effect of angle of inclination and heat flux on heat transfer. Heat transfer results are given for inclination angles of 0o
(horizontal), 30o , 60o and 90o (vertical) using annulus diameter ratio of 1.8, inner and outer tube length 50 cm and heat flux from 70 W/m2 to 600W/m2 . The results show that the local and average Nusselt number increase as the heat flux increase and when angle of inclination changed from 0o
(horizontal) to 90o (vertical).An empirical correlations of average Nusselt number as a function of Rayleigh number were deduced.
Computational Analysis of Natural Convection in Spherical Annulus Using FEVIJMER
HEAT transfer by natural convection from a body to its finite enclosure is of importance
in nuclear reactor technology, electronic instrumentation packaging, aircraft cabin design, the
analysis of fluid suspension gyrocompasses, and numerous other practical situations. The steady
natural convection heat transfer of fluids between two concentric isothermal spheres is investigated
computationally with the help of FEV in ANSYS 14.5. The inner wall is subjected to a higher
temperature and outer is at room temperature. The steady behavior of the flow field and its
subsequent effect on the temperature distribution for different Rayleigh numbers and radius ratios
are analyzed.
Bossious boundary condition is taken for natural convection and which is solved in fluent
module. Steady solutions of the entire flow field is obtained for Rayleigh number (5x101<ra><105),><rr><3). The result shows that the Rayleigh number and
radius ratio have a profound influence on the temperature and flow fields and Prandlt number has
very negligible effect. The results of average Nusselt numbers are also compared with those of
previous numerical investigations. Excellent agreement is obtained.
Economic feasibility report on cetp using physico chemical process-a case studyeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document summarizes a study that examines heat and mass transfer over a vertical plate in a porous medium with Soret and Dufour effects, a convective surface boundary condition, chemical reaction, and magnetic field. The governing equations for the fluid flow, heat transfer, and mass transfer are presented. Similarity solutions are used to transform the governing partial differential equations into ordinary differential equations, which are then solved numerically. The results are presented graphically to show the influence of various parameters on velocity, temperature, concentration, skin friction, Nusselt number, and Sherwood number.
The Effect of Hall Current on an Unsteady MHD Free Convective Flow along a Ve...iosrjce
In this paper we investigate the effect of hall current on an unsteady magnetohydrodynamic free
convective flow along a vertical porous plate with thermal radiation. The dimensionless governing coupled,
non-linear boundary layer partial differential equations are solved by an efficient finite element method for
velocity, temperature, concentration field and also the expression for shearing stress, Nusselt number and
Sherwood number are obtained. The effect of thermal Grashof Number, solutal Grashof Number, Transpiration
cooling parameter, Prandtl Number, Schmidt Number, Hartmann number, Thermal radiation parameter, Eckert
number and Hall parameter on the flow field are shown through graphs and tables.
This document summarizes a study that investigated the effects of Hall current, chemical reaction, and viscous dissipation on unsteady magnetohydrodynamic (MHD) flow, heat, and mass transfer along a porous flat plate. The governing equations were solved numerically using the Galerkin finite element method. Parameters like the magnetic field, Prandtl number, Schmidt number, and modified Grashof numbers for heat and mass transfer were varied to examine their impacts on velocity, temperature, and other variables. The results provide insight into complex coupled transport processes with potential applications in areas like material processing, energy systems, and industrial equipment.
Heat Transfer on Steady MHD rotating flow through porous medium in a parallel...IJERA Editor
We discussed the combined effects of radiative heat transfer and a transverse magnetic field on steady rotating flow of an electrically conducting optically thin fluid through a porous medium in a parallel plate channel and non-uniform temperatures at the walls. The analytical solutions are obtained from coupled nonlinear partial differential equations for the problem. The computational results are discussed quantitatively with the aid of the dimensionless parameters entering in the solution.
Homotopy Analysis to Soret and Dufour Effects on Heat and Mass Transfer of a ...iosrjce
The objective of this paper is to study the Soret and Dufour effects on the free convection boundary
layer flow of an incompressible, viscous and chemically reacting fluid over a vertical plate in the presence of
viscous dissipation. The governing partial differential equations are converted to a set of ordinary differential
equations using suitable similarity transformations. The resulting equations are solved analytically using
homotopy analysis method (HAM). The convergence of obtained analytical solutions is explicitly discussed. The
effects of various parameters on dimensionless velocity, temperature and concentration profiles are discussed
with the help of graphs. The numerical values of skin friction, Nusselt number and Sherwood number for
different parameters are presented in tabular form. Our results are compared with the previously published
results and are found to be in good agreement.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Effects of Hall and thermal on MHD Stokes’ second problem for unsteady second...IJERA Editor
In this paper, we investigated the combined effects of Hall and thermal on MHD Stokes’ second problem for
unsteady second grade fluid flow through porous medium. The expressions for the velocity field and the
temperature field are obtained analytically. The effects of various pertinent parameters on the velocity field and
temperature field are studied in detail with the aid of graphs.
Effect of Radiation on Mixed Convection Flow of a Non-Newtonian Nan fluid ove...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
28Dufour effect on radiative effect flow and heat transfer over a vertically ...IRJET Journal
The document discusses radiative heat transfer over a vertically oscillating porous flat plate embedded in a porous medium with an oscillating surface temperature. It presents the governing equations for momentum, energy and concentration of the two-dimensional flow. Dimensionless parameters are introduced and the equations are non-dimensionalized. Parameters like the Darcy number, radiation parameter, magnetic parameter, Dufour number, Grashof numbers and others are defined. The effects of these parameters on velocity, temperature and concentration profiles are analyzed through graphs.
This document provides an abstract for a research article on magnetohydrodynamic mixed convection micro polar flow through a porous medium driven by a porous stretching sheet. The following key points are discussed:
- Governing partial differential equations are derived and numerically solved using finite element analysis to study the effects of various parameters on velocity, micro rotation, and temperature profiles.
- Parameters investigated include the Hartmann number, Darcy parameter, surface conditions, and their impact on the fluid flow is explored.
- The study aims to provide insights applicable to processes involving polymer sheet stretching and controlled cooling/heating of strips or filaments during manufacturing.
Numerical analysis of dynamic viscosity effect associated with a continuously...Alexander Decker
This document presents a numerical study of the effects of varying dynamic viscosity coupled with viscous energy dissipation on convective heat transfer in a fluid-filled rectangular cavity. The cavity contains a continuously moving heated horizontal plate and is bounded by fixed walls. The governing equations for momentum, energy and vorticity are solved using the finite difference method for different fluids at varying dynamic viscosities and heat capacities. The results show that increasing dynamic viscosity decreases velocity and increasing specific heat capacity affects energy distribution and heat transfer rates. These findings provide useful baseline data for manufacturing processes involving continuous moving surfaces like wire drawing and rolling.
Non-Darcy Convective Heat and Mass Transfer Flow in a Vertical Channel with C...IJERA Editor
In this paper, We made an attempt to study thermo-diffusion and dissipation effect on non-Darcy convective
heat and Mass transfer flow of a viscous fluid through a porous medium in a vertical channel with Radiation and
heat sources. The governing equations of flow, heat and mass transfer are solved by using regular perturbation
method with δ, the porosity parameter as a perturbation parameter. The velocity, temperature, concentration,
shear stress and rate of Heat and Mass transfer are evaluated numerically for different variations of parameter.
Abstract— A scientific investigation is created to examine the nonlinear unfaltering blended convection limit
layer stream and warmth exchange of an incompressible digression hyperbolicnon-Newtonian liquid from a
non-isothermal wedge in the nearness of attractive field. The changed preservation conditions are understood
numerically subject to physically fitting limit conditions utilizing a second-arrange precise verifiable limited
distinction Keller Box method. The numerical code is accepted with past studies. The impact of various rising
non-dimensional parameters, to be specific Weissenberg number (We), power law record (n), blended
convection parameter, weight angle parameter (m), Prandtl number (Pr), Biot number, attractive parameter
(M)and dimensionless extraneous direction on speed and temperature development in the limit layer
administration are inspected in subtle element. Moreover, the impacts of these parameters on surface warmth
exchange rate and nearby skin erosion are additionally examined. Approval with prior Newtonian studies is
introduced and amazing relationship accomplished. It is found that speed is lessened with expanding We,
while, temperature is increased. Expanding n improves speed yet diminishes temperature, a comparable
pattern was seen. An expanding M is found to decline speed however temperature increments.
Keywords— Magnetic parameter, Mixed Convection parameter, Non-Newtonian digression hyperbolic liquid,
power law index, Weissenberg number, Weight inclination parameter.
This document summarizes a research article that investigates the steady, two-dimensional Falkner-Skan boundary layer flow over a stationary wedge with momentum and thermal slip boundary conditions. The flow considers a temperature-dependent thermal conductivity in the presence of a porous medium and viscous dissipation. Governing partial differential equations are non-dimensionalized and transformed into ordinary differential equations using similarity transformations. The equations are highly nonlinear and cannot be solved analytically, so a numerical solver is used. Numerical results are presented for the skin friction coefficient, local Nusselt number, velocity and temperature profiles for varying parameters like the Falkner-Skan parameter and Eckert number.
Effects of Variable Viscosity and Thermal Conductivity on MHD free Convection...theijes
This document summarizes a study that numerically investigates the effects of variable viscosity and thermal conductivity on magnetohydrodynamic (MHD) free convection and mass transfer flow over an inclined vertical surface in a porous medium with heat generation. The governing equations are reduced to ordinary differential equations using similarity transformations and then solved numerically using a shooting method. The results show that increasing the viscosity variation parameter, thermal conductivity parameter, magnetic parameter, permeability parameter, or Schmidt number decreases the fluid velocity, while increasing the heat generation parameter, local Grashof number, or mass Grashof number increases the fluid velocity. Skin friction, Nusselt number, and Sherwood number are also computed and presented in tabular form.
This document summarizes a research paper that examines the steady magnetohydrodynamic mass transfer flow of a polar fluid through a porous medium bounded by an infinite vertical porous plate. The paper presents the governing equations for the fluid flow, angular momentum, energy, and concentration considering effects such as magnetic field, thermal diffusion, and radiation. Exact solutions for the velocity, angular velocity, temperature, and concentration fields are obtained. The skin friction and heat transfer rate are also derived. Graphs illustrate the effects of various parameters on the flow behavior and transport properties.
Modeling And Analytical Simulation Of Heat And Mass Transfer In The Flow Of A...iosrjce
IOSR Journal of Mathematics(IOSR-JM) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mathemetics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mathematics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
NATURAL CONVECTION HEAT TRANSFER IN INCLINED OPEN ANNULUS PASSEGE HEATED FROM...IAEME Publication
Natural convection is investigated experimentally in an open cylindrical annulus heated with both annulus inner and outer sides under same constant heat flux condition to study the effect of angle of inclination and heat flux on heat transfer. Heat transfer results are given for inclination angles of 0o
(horizontal), 30o , 60o and 90o (vertical) using annulus diameter ratio of 1.8, inner and outer tube length 50 cm and heat flux from 70 W/m2 to 600W/m2 . The results show that the local and average Nusselt number increase as the heat flux increase and when angle of inclination changed from 0o
(horizontal) to 90o (vertical).An empirical correlations of average Nusselt number as a function of Rayleigh number were deduced.
Computational Analysis of Natural Convection in Spherical Annulus Using FEVIJMER
HEAT transfer by natural convection from a body to its finite enclosure is of importance
in nuclear reactor technology, electronic instrumentation packaging, aircraft cabin design, the
analysis of fluid suspension gyrocompasses, and numerous other practical situations. The steady
natural convection heat transfer of fluids between two concentric isothermal spheres is investigated
computationally with the help of FEV in ANSYS 14.5. The inner wall is subjected to a higher
temperature and outer is at room temperature. The steady behavior of the flow field and its
subsequent effect on the temperature distribution for different Rayleigh numbers and radius ratios
are analyzed.
Bossious boundary condition is taken for natural convection and which is solved in fluent
module. Steady solutions of the entire flow field is obtained for Rayleigh number (5x101<ra><105),><rr><3). The result shows that the Rayleigh number and
radius ratio have a profound influence on the temperature and flow fields and Prandlt number has
very negligible effect. The results of average Nusselt numbers are also compared with those of
previous numerical investigations. Excellent agreement is obtained.
Economic feasibility report on cetp using physico chemical process-a case studyeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
A geophysical insight of earthquake occurred on 21 st may 2014 off paradip, b...eSAT Publishing House
1) A 6.0 magnitude earthquake occurred off the coast of Paradip, Odisha in the Bay of Bengal on May 21, 2014 at a depth of around 40 km.
2) Analysis of magnetic and bathymetric data from the area revealed the presence of major lineaments in NW-SE and NE-SW directions that may be responsible for seismic activity through stress release.
3) Movements along growth faults at the margins of large Bengal channels, due to large sediment loads, could also contribute to seismic events by triggering movements along the faults.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Feasibility study of concrete based pavement by using fibers & cementing wast...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Emotional telugu speech signals classification based on k nn classifiereSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This document summarizes a research paper that proposes a new technique called data slicing for privacy preserving data publishing and microdata anonymization. Data slicing partitions data both horizontally into buckets and vertically into columns based on attribute correlations. Within each bucket and column, attribute values are randomly permuted. This preserves utility better than generalization and prevents attribute disclosure. The paper presents the data slicing technique and algorithm, and compares it to existing methods. Experimental results show data slicing effectively achieves privacy goals while maintaining data utility.
This document summarizes a study on the nitrate adsorption characteristics of red soil. The objectives were to determine the optimum contact time, adsorbent dosage, and pH for nitrate removal. Batch experiments showed that equilibrium was reached after 130 minutes of contact time, with 86% removal efficiency at a dosage of 1400mg. Higher adsorption occurred at pH 6.0. The adsorption kinetics followed a first order rate equation and the data fit the Langmuir and Freundlich isotherm models well. The results indicate that red soil is effective at removing nitrate.
This document summarizes a research paper that proposes a novel approach for securing data by combining steganography and extended visual cryptography. It involves three main steps: 1) Hidden data is embedded into a cover image using a text embedding algorithm. 2) The cover image is then encrypted into two shares using a visual cryptography technique called VIP synchronization and error diffusion. 3) To extract the hidden data, the shares are combined and the extraction algorithm retrieves the text from the pixel values. The approach generates meaningful shares that look like random noise images. It analyzes the results by calculating the PSNR and MSE values between the original cover images and generated shares.
This document presents a numerical solution for unsteady heat and mass transfer flow past an infinite vertical plate with variable thermal conductivity, taking into account Dufour number and heat source effects. The governing equations are non-linear and coupled, and were solved numerically using an implicit finite difference scheme. Various parameters, including Dufour number and heat source, were found to influence the velocity, temperature, and concentration profiles. Skin friction, Nusselt number, and Sherwood number were also calculated.
IRJET-Effect of Thermal-Diffusion, Dissipation and Chemical Reaction on Unste...IRJET Journal
This document discusses heat and mass transfer in an unsteady flow of a viscous electrically conducting fluid through a vertical channel with heat sources and traveling thermal waves on the boundaries. The governing equations for momentum, continuity, energy and diffusion are presented. Boundary conditions are specified where one wall has a traveling thermal wave and the other is maintained at a constant temperature, and both walls are at constant concentrations. Dimensionless variables are introduced and the governing equations are non-dimensionalized. The effects of parameters like the thermal and solutal Rayleigh numbers, Darcy and Prandtl numbers, internal heat generation, and chemical reaction on velocity, temperature and concentration fields are to be analyzed.
This document presents an analysis of free convective flow and heat transfer of a viscous incompressible fluid over a linearly moving vertical porous plate with suction and viscous dissipation. The fluid viscosity is assumed to vary linearly with temperature. Governing boundary layer equations are non-dimensionalized using similarity transformations and reduced to a boundary value problem. The problem is solved numerically using a shooting method along with the 4th order Runge-Kutta method. Results for dimensionless velocity and temperature distributions are presented for various parameter values, and skin friction and Nusselt numbers are reported in tables.
Soret Effect And Effect Of Radiation On Transient Mhd Free Convective Flow Ov...inventionjournals
The present paper is concerned to analyze the radiation, Magneto hydrodynamic and soret effects on unsteady flow heat and mass transfer characteristics in a viscous, incompressible and electrically conduction fluid over a semi-infinite vertical porous plate through porous media the porous plate is subjected to a transverse variable suction velocity. The transient, non linear and coupled dimensionless governing equations for this investigation are solved analytically using perturbation technique about a small parameter . the effects of governing parameters on the flow variables are discussed graphically.
This document summarizes an analysis of an unsteady magnetohydrodynamic (MHD) flow of a viscoelastic fluid along an infinite vertical porous surface with fluctuating temperature and concentration. The governing equations for fluid motion, energy, and concentration are solved using perturbation techniques. The velocity, temperature, and concentration profiles are shown graphically, and values for skin friction, Nusselt number, and Sherwood number are presented in tables for different flow parameters.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability
This document presents a mathematical analysis of the unsteady free convection and mass transfer flow through a porous medium with variable viscosity and thermal conductivity. The governing equations for momentum, temperature, and concentration are non-dimensionalized and solved using an explicit finite difference method. Key aspects include:
1) The flow is induced by an exponentially accelerated vertical plate with variable temperature and concentration.
2) Viscosity and thermal conductivity are assumed to vary linearly with temperature.
3) The resulting non-dimensional equations are nonlinear partial differential equations solved numerically.
4) Skin friction and Nusselt numbers are defined and analyzed graphically.
Non-Newtonian Visco-elastic Heat Transfer Flow Past a Stretching Sheet with C...IJERA Editor
In this paper two dimensional flow of a viscoelastic fluid due to stretching surface is considered. Flow analysis is carried out by using closed form solution of fourth order differential equation of motion of viscoelastic fluid. Further (Walters’ liquid B’ model) heat transfer analysis is carried out using convective surface condition. The governing equations of flow and heat transfer are non-linear partial differential equations which are unable to solve analytically hence are solved using Runge-Kutta Numerical Method with efficient shooting technique. The flow and heat transfer characteristics are studied through plots drawn. Numerical values of Wall temperature are calculated and presented in the table and compared with earlier published results which are in good agreement
Heat transefer of a dusty fluid over a stretching sheet with internal heat ge...eSAT Journals
Abstract This paper pertains to investigate the heat transfer characteristics of two dimensional two phase flow in a porous medium over a stretching sheet with internal heat generation. The novelty of the present study is to consider the permeability parameter, space and temperature dependent internal heat generation along with various parameters like Froud number ,heat source/sink parameter, Grashof number, Prandtl number, Eckert number, Volume fraction, fluid interaction parameter etc. The method of solution involves similarity transformation which reduces the partial differential equations into non linear ordinary differential equations. These non linear ordinary differential equations have been solved by applying Runge-Kutta 4-th order method with help of shooting technique. The temperature profiles for different values of flow parameters are presented in figures. It is observed from all the figures that the boundary conditions are satisfied asymptotically in all the cases which supporting the accuracy of the numerical results. All the figures shows that increasing values of any parameter increase the thermal boundary layer except the prandtl number and permeability parameter. AMS classification 76T10, 76T15 Keywords: Heat source/sink, Volume fraction, Fluid – particle interaction parameter, Dusty fluid, Boundary layer flow, Stretching sheet, Eckert number, Grashof number, Prandtle number, Shooting techniques, Froud number, permeability parameter.
Melting Heat Transfer in MHD Boundary Layer Stagnation-Point Flow towards a S...iosrjce
An analysis is carried out to study the MHD steady two-dimensional stagnation-point flow and heat transfer from
a warm, laminar liquid flow to a melting stretching sheet. The governing partial differential equations are transformed into
ordinary differential equations by similarity transformation, before being solved numerically using Runge-Kutta-Fehlberg
method. Results for the skin friction coefficient, local Nusselt number, velocity profiles as well as temperature profiles are
presented for different values of the governing parameters. Effects of the Magnetic parameter, melting parameter, stretching
parameter and prandtl number on the flow and heat transfer characteristics are thoroughly examined.
Convective Heat And Mass Transfer Flow Of A Micropolar Fluid In A Rectangular...IJERA Editor
In this chapter we make an investigation of the convective heat transfer through a porous medium in a Rectangular enclosure with Darcy model. The transport equations of liner momentum, angular momentum and energy are solved by employing Galerkine finite element analysis with linear triangular elements. The computation is carried out for different values of Rayleigh number – Ra micropolar parameter – R, spin gradient parameter, Eckert number Ec and heat source parameter. The rate of heat transfer and couple stress on the side wall is evaluated for different variation of the governing parameters.
Boundary layer flow and heat transfer of a dusty fluid over a vertical permea...eSAT Journals
This document discusses boundary layer flow and heat transfer of a dusty fluid over a vertical permeable stretching surface. The governing equations for steady, two-dimensional flow are presented and non-dimensionalized. The equations are then solved numerically using the Runge-Kutta method. Results are presented graphically showing the effects of various parameters like fluid-particle interaction, local Grashof number, radiation parameter, and Eckert number on flow and heat transfer characteristics. Comparisons are made to previous studies to validate the numerical method.
Heat and Mass Transfer Hydromagnetic Radiative Casson Fluid Flow over an Expo...inventionjournals
The present paper examines the hydromagnetic two-dimensional boundary layer flow of a nonNewtonian fluid accompanied by heat and mass transfer towards an exponentially stretching sheet in the presence of chemical reaction and thermal radiation. Casson model is used to characterize non-Newtonian fluid behavior. Using the similarity transformations, the governing partial differential equations are transformed into self-similar ordinary differential equations is solved by using Matlab bvp4c package. The effects of pertinent parameters are presented in both graphical and tabular form.
Heat and Mass Transfer Hydromagnetic Radiative Casson Fluid Flow over an Expo...inventionjournals
The present paper examines the hydromagnetic two-dimensional boundary layer flow of a nonNewtonian fluid accompanied by heat and mass transfer towards an exponentially stretching sheet in the presence of chemical reaction and thermal radiation. Casson model is used to characterize non-Newtonian fluid behavior. Using the similarity transformations, the governing partial differential equations are transformed into self-similar ordinary differential equations is solved by using Matlab bvp4c package. The effects of pertinent parameters are presented in both graphical and tabular form.
Numerical study of mhd boundary layer stagnation point flow and heat transfer...eSAT Publishing House
This document presents a numerical study of magnetohydrodynamic boundary layer stagnation point flow and heat transfer over an exponentially stretching surface with thermal radiation. The governing partial differential equations are transformed into ordinary differential equations using similarity transformations. A Runge-Kutta shooting method is used to solve the coupled non-linear system numerically. The effects of parameters such as the Prandtl number, Grashoff number, Eckert number, and velocity ratio parameter are analyzed through graphs of the velocity and temperature profiles. The results are compared to known solutions to validate the numerical method.
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Unsteady MHD Flow Past A Semi-Infinite Vertical Plate With Heat Source/ Sink:...IJERA Editor
In the present paper a numerical attempt is made to study the combined effects of heat source and sink on unsteady laminar boundary layer flow of a viscous, incompressible, electrically conducting fluid along a semiinfinite vertical plate. A magnetic field of uniform strength is applied normal to the flow. The governing boundary layer equations are solved numerically, using Crank-Nicolson method. Graphical results of velocity and temperature fields, tabular values of Skin-friction and Nusselt are presented and discussed at various parametric conditions. From this study, it is found that the velocity and temperature of the fluid increase in the presence of heat source but they decrease in the presence of heat absorption parameter.
MHD CASSON FLUID FLOW AND HEAT TRANSFER WITH PST AND PHF HEATING CONDITIONS D...IAEME Publication
In the present paper two-dimensional flow of non-Newtonian MHD flow of Casson fluid heat transfer with PST & PHF is considered. Using Nevier Stoke’s Equations of Motion the momentum and energy equations of Casson fluid are derived. These governing equations of motion and temperature are non-linear partial differential equations which are tedious to solve as they are, hence these partial differential equations are converted into Ordinary differential equations using suitable similarity transformations. These ODE’s are then solved numerically by the efficient Runge Kutta Fehlberg method. Effects of various governing parameters on the flow and heat transfer profiles are analyzed. Further the numerical Values of Wall temperature and Wall temperature Profiles are calculated and discussed in detail through graphs in both the cases of PST and PHF.
Similar to Natural convection heat transfer oscillatory flow of an elastico viscous fluid from vertical plate (20)
Hudhud cyclone caused extensive damage in Visakhapatnam, India in October 2014, especially to tree cover. This will likely impact the local environment in several ways: increased air pollution as trees absorb less; higher temperatures without tree canopy; increased erosion and landslides. It also created large amounts of waste from destroyed trees. Proper management of solid waste is needed to prevent disease spread. Suggested measures include restoring damaged plants, building fountains to reduce heat, mandating light-colored buildings, improving waste management, and educating public on health risks. Overall, changes are needed to water, land, and waste practices to rebuild the environment after the cyclone removed green cover.
Impact of flood disaster in a drought prone area – case study of alampur vill...eSAT Publishing House
1) In September-October 2009, unprecedented heavy rainfall and dam releases caused widespread flooding in Alampur village in Mahabub Nagar district, a historically drought-prone area.
2) The flood damaged or destroyed homes, buildings, infrastructure, crops, and documents. It displaced many residents and cut off the village.
3) The socioeconomic conditions and mud-based construction of homes in the village exacerbated the flood's impacts, making damage more severe and recovery more difficult.
The document summarizes the Hudhud cyclone that struck Visakhapatnam, India in October 2014. It describes the cyclone's formation, rapid intensification to winds of 175 km/h, and landfall near Visakhapatnam. The cyclone caused extensive damage estimated at over $1 billion and at least 109 deaths in India and Nepal. Infrastructure like buildings, bridges, and power lines were destroyed. Crops and fishing boats were also damaged. The document then discusses coping strategies and improvements needed to disaster management plans to better prepare for future cyclones.
Groundwater investigation using geophysical methods a case study of pydibhim...eSAT Publishing House
This document summarizes the results of a geophysical investigation using vertical electrical sounding (VES) methods at 13 locations around an industrial area in India. The VES data was interpreted to generate geo-electric sections and pseudo-sections showing subsurface resistivity variations. Three main layers were typically identified - a high resistivity topsoil, a weathered middle layer, and a basement rock. Pseudo-sections revealed relatively more weathered areas in the northwest and southwest. Resistivity sections helped identify zones of possible high groundwater potential based on low resistivity anomalies sandwiched between more resistive layers. The study concluded the electrical resistivity method was useful for understanding subsurface geology and identifying areas prospective for groundwater exploration.
Flood related disasters concerned to urban flooding in bangalore, indiaeSAT Publishing House
1. The document discusses urban flooding in Bangalore, India. It describes how factors like heavy rainfall, population growth, and improper land use have contributed to increased flooding in the city.
2. Flooding events in 2013 are analyzed in detail. A November rainfall caused runoff six times higher than the drainage capacity, inundating low-lying residential areas.
3. Impacts of urban flooding include disrupted daily life, damaged infrastructure, and decreased economic activity in affected areas. The document calls for improved flood management strategies to better mitigate urban flooding risks in Bangalore.
Enhancing post disaster recovery by optimal infrastructure capacity buildingeSAT Publishing House
This document discusses enhancing post-disaster recovery through optimal infrastructure capacity building. It presents a model to minimize the cost of meeting demand using auxiliary capacities when disaster damages infrastructure. The model uses genetic algorithms to select optimal capacity combinations. The document reviews how infrastructure provides vital services supporting recovery activities and discusses classifying infrastructure into six types. When disaster reduces infrastructure services, a gap forms between community demands and available support, hindering recovery. The proposed research aims to identify this gap and optimize capacity selection to fill it cost-effectively.
Effect of lintel and lintel band on the global performance of reinforced conc...eSAT Publishing House
This document analyzes the effect of lintels and lintel bands on the seismic performance of reinforced concrete masonry infilled frames through non-linear static pushover analysis. Four frame models are considered: a frame with a full masonry infill wall; a frame with a central opening but no lintel/band; a frame with a lintel above the opening; and a frame with a lintel band above the opening. The results show that the full infill wall model has 27% higher stiffness and 32% higher strength than the model with just an opening. Models with lintels or lintel bands have slightly higher strength and stiffness than the model with just an opening. The document concludes lintels and lintel
Wind damage to trees in the gitam university campus at visakhapatnam by cyclo...eSAT Publishing House
1) A cyclone with wind speeds of 175-200 kph caused massive damage to the green cover of Gitam University campus in Visakhapatnam, India. Thousands of trees were uprooted or damaged.
2) A study assessed different types of damage to trees from the cyclone, including defoliation, salt spray damage, damage to stems/branches, and uprooting. Certain tree species were more vulnerable than others.
3) The results of the study can help in selecting more wind-resistant tree species for future planting and reducing damage from future storms.
Wind damage to buildings, infrastrucuture and landscape elements along the be...eSAT Publishing House
1) A visual study was conducted to assess wind damage from Cyclone Hudhud along the 27km Visakha-Bheemli Beach road in Visakhapatnam, India.
2) Residential and commercial buildings suffered extensive roof damage, while glass facades on hotels and restaurants were shattered. Infrastructure like electricity poles and bus shelters were destroyed.
3) Landscape elements faced damage, including collapsed trees that damaged pavements, and debris in parks. The cyclone wiped out over half the city's green cover and caused beach erosion around protected areas.
1) The document reviews factors that influence the shear strength of reinforced concrete deep beams, including compressive strength of concrete, percentage of tension reinforcement, vertical and horizontal web reinforcement, aggregate interlock, shear span-to-depth ratio, loading distribution, side cover, and beam depth.
2) It finds that compressive strength of concrete, tension reinforcement percentage, and web reinforcement all increase shear strength, while shear strength decreases as shear span-to-depth ratio increases.
3) The distribution and amount of vertical and horizontal web reinforcement also affects shear strength, but closely spaced stirrups do not necessarily enhance capacity or performance.
Role of voluntary teams of professional engineers in dissater management – ex...eSAT Publishing House
1) A team of 17 professional engineers from various disciplines called the "Griha Seva" team volunteered after the 2001 Gujarat earthquake to provide technical assistance.
2) The team conducted site visits, assessments, testing and recommended retrofitting strategies for damaged structures in Bhuj and Ahmedabad. They were able to fully assess and retrofit 20 buildings in Ahmedabad.
3) Factors observed that exacerbated the earthquake's impacts included unplanned construction, non-engineered buildings, improper prior retrofitting, and defective materials and workmanship. The professional engineers' technical expertise was crucial for effective post-disaster management.
This document discusses risk analysis and environmental hazard management. It begins by defining risk, hazard, and toxicity. It then outlines the steps involved in hazard identification, including HAZID, HAZOP, and HAZAN. The document presents a case study of a hypothetical gas collecting station, identifying potential accidents and hazards. It discusses quantitative and qualitative approaches to risk analysis, including calculating a fire and explosion index. The document concludes by discussing hazard management strategies like preventative measures, control measures, fire protection, relief operations, and the importance of training personnel on safety.
Review study on performance of seismically tested repaired shear wallseSAT Publishing House
This document summarizes research on the performance of reinforced concrete shear walls that have been repaired after damage. It begins with an introduction to shear walls and their failure modes. The literature review then discusses the behavior of original shear walls as well as different repair techniques tested by other researchers, including conventional repair with new concrete, jacketing with steel plates or concrete, and use of fiber reinforced polymers. The document focuses on evaluating the strength retention of shear walls after being repaired with various methods.
Monitoring and assessment of air quality with reference to dust particles (pm...eSAT Publishing House
This document summarizes a study on monitoring and assessing air quality with respect to dust particles (PM10 and PM2.5) in the urban environment of Visakhapatnam, India. Sampling was conducted in residential, commercial, and industrial areas from October 2013 to August 2014. The average PM2.5 and PM10 concentrations were within limits in residential areas but moderate to high in commercial and industrial areas. Exceedance factor levels indicated moderate pollution for residential areas and moderate to high pollution for commercial and industrial areas. There is a need for management measures like improved public transport and green spaces to combat particulate air pollution in the study areas.
Low cost wireless sensor networks and smartphone applications for disaster ma...eSAT Publishing House
This document describes a low-cost wireless sensor network and smartphone application system for disaster management. The system uses an Arduino-based wireless sensor network comprising nodes with various sensors to monitor the environment. The sensor data is transmitted to a central gateway and then to the cloud for analysis. A smartphone app connected to the cloud can detect disasters from the sensor data and send real-time alerts to users to help with early evacuation. The system aims to provide low-cost localized disaster detection and warnings to improve safety.
Coastal zones – seismic vulnerability an analysis from east coast of indiaeSAT Publishing House
This document summarizes an analysis of seismic vulnerability along the east coast of India. It discusses the geotectonic setting of the region as a passive continental margin and reports some moderate seismic activity from offshore in recent decades. While seismic stability cannot be assumed given events like the 2004 tsunami, no major earthquakes have been recorded along this coast historically. The document calls for further study of active faults, neotectonics, and implementation of improved seismic building codes to mitigate vulnerability.
Can fracture mechanics predict damage due disaster of structureseSAT Publishing House
This document discusses how fracture mechanics can be used to better predict damage and failure of structures. It notes that current design codes are based on small-scale laboratory tests and do not account for size effects, which can lead to more brittle failures in larger structures. The document outlines how fracture mechanics considers factors like size effect, ductility, and minimum reinforcement that influence the strength and failure behavior of structures. It provides examples of how fracture mechanics has been applied to problems like evaluating shear strength in deep beams and investigating a failure of an oil platform structure. The document argues that fracture mechanics provides a more scientific basis for structural design compared to existing empirical code provisions.
This document discusses the assessment of seismic susceptibility of reinforced concrete (RC) buildings. It begins with an introduction to earthquakes and the importance of vulnerability assessment in mitigating earthquake risks and losses. It then describes modeling the nonlinear behavior of RC building elements and performing pushover analysis to evaluate building performance. The document outlines modeling RC frames and developing moment-curvature relationships. It also summarizes the results of pushover analyses on sample 2D and 3D RC frames with and without shear walls. The conclusions emphasize that pushover analysis effectively assesses building properties but has limitations, and that capacity spectrum method provides appropriate results for evaluating building response and retrofitting impact.
Effect of hudhud cyclone on the development of visakhapatnam as smart and gre...eSAT Publishing House
This document discusses the effects of Cyclone Hudhud on the development of Visakhapatnam as a smart and green city through a case study and preliminary surveys. The surveys found that 31% of participants had experienced cyclones, 9% floods, and 59% landslides previously in Visakhapatnam. Awareness of disaster alarming systems increased from 14% before the 2004 tsunami to 85% during Cyclone Hudhud, while awareness of disaster management systems increased from 50% before the tsunami to 94% during Hudhud. The surveys indicate that initiatives after the tsunami improved awareness and preparedness. Developing Visakhapatnam as a smart, green city should consider governance
This document summarizes a product called H-HUTS that aims to provide sustainable disaster recovery housing. H-HUTS uses cardboard and origami-inspired modular construction to quickly provide temporary shelters after disasters. The cardboard shelters are designed to be upgraded into permanent homes over time using low-cost materials like shotcrete or concrete. The modular design allows for flexibility and community participation in construction. Testing has shown the shelters can withstand wind loads and provide adequate insulation. The goal of H-HUTS is to not just provide initial shelter but help disaster-affected communities regain permanency in housing and recover in the long-term.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
UNLOCKING HEALTHCARE 4.0: NAVIGATING CRITICAL SUCCESS FACTORS FOR EFFECTIVE I...amsjournal
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Natural convection heat transfer oscillatory flow of an elastico viscous fluid from vertical plate
1. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org959
NATURAL CONVECTION HEAT TRANSFER OSCILLATORY FLOW OF
AN ELASTICO-VISCOUS FLUID FROM VERTICAL PLATE
D Chenna Kesavaiah1
, P. V. Satyanarayana2
,A Sudhakaraiah3
,S Venkataramana4
1
Assistant Professor, Department of H &BS, Visvesvaraya College of Engineering & Technology,
Greater Hyderabad, A.P, India,2
Assistant Professor (Senior), Fluid Dynamics Division, School of Advanced Sciences, VIT
University, Vellore., 3
Assistant Professor, Department of Future Studies, Sri Venkateswara University, Tirupati – 517
502, A.P, India,4
Professor, Department of Mathematics, Sri Venkateswara University, Tirupati – 517 502, A.P, India
chennakesavaiah@gmail.com, pvsatya8@yahoo.co.in, Sudha.maths@rediffmail.com
Abstract
This paper examines the problem of two dimensional unsteady free convection oscillatory flow of an Elastico-viscous fluid past an
impulsively started infinite vertical plate with constant heat flux and heat generation. The flow is subjected to a constant suction.
Using perturbation techniquethe expressions are obtained for velocity, temperature distribution and skin friction. The results obtained
are discussed for various numerical values of the parameters entered into the equations governing the flow, with help of graphs.
Index terms:Elastico-viscous fluid, free convection, Porous medium, vertical plate.
--------------------------------------------------------------------------------***-----------------------------------------------------------------------------
1. INTRODUCTION
The boundary layer phenomenon in non-Newtonian fluids was
studied by a few research workers, whose constitutive
equations are characterized by Walters [22], exhibits a
boundary layer phenomenon. The effect of unsteady
fluctuations of the free velocity on the flow in the boundary
layer of an incompressible elastico-viscous liquid [Walters
fluid (model B')] past an infinite porous plate with constant
suction velocity was discussed by Kaloni [8]. Flow and heat
transfer in the boundary layer on a continuous moving surface
was considered by Tsouet. al.[20]. Vajravelu [21] studied the
solution of boundary layer flow and heat transfer over a
continuous porous surface moving in an oscillating free
stream. Unsteady free convection flow of an incompressible
fluid along a moving surface in an oscillating free stream was
presented by Sharma and Gocher [15].
Boundary layer behavior over a continuous moving surface is
an important type of flow occurring in several engineering
processes, for example materials manufactured by extrusion
processes and heat treated materials traveling between a feed
roll and a wind up roll or on conveyor belts possesses the
characteristics of a moving continuous surface. In view of
these applications, Sakiadis [14] initiated the study of
boundary layer flow over a continuous solid surface moving
with constant speed. Due to entrainment of ambient fluid, this
boundary layer flow is quite different than boundary layer
flow over a semi-infinite flat plate. Erickson et. al. [6]
extended this problem to the case in which the transverse
velocity at the moving surface is non zero, with heat and mass
transfer in the boundary layer being taken into account. Beg et
al. [1] have presented an analysis on unsteady natural
convection flow past an infinite vertical plate embedded
within a highly porous medium under the influence of uniform
magnetic field, wherein, the suction velocity is subjected to
small amplitude oscillations in time about the steady non-zero
mean suction velocity.
The unsteady free convective flow of an elastico-viscous fluid
was studied by Soundalgekar [18]. Revankar et al [13], Singh
[16] discussed the flow of elastico-viscous fluid past
impulsively started plate. Hayat et al. [7] discussed the flow of
visco-elastic fluid past an oscillating plate, in which he
discussed the influence of suction/injection on velocity
distribution. In many problems, particularly those involving
the cooling of electrical and nuclear component, the wall heat
flux is specified. In such problem overheating burn out and
melt down are very important issues. The problems with
prescribed heat flux are special case of the vast analytical
accessible class of problem. Lee et al. [9], Malarvizhi et al.
[11], Burak et al. [2],Kolani [8] and Pantokraters [12] are
some of the researchers who have investigated the convection
flow with prescribed heat flux condition. Effects of the
chemical reaction and radiation absorption on free convection
flow through porous medium with variable suction in the
presence of uniform magnetic field were studied by
SudheerBabu and Satyanarayana [19]. Devikaet.al [5]MHD
Oscillatory flow of a Visco Elastic fluid in a Porous channel
with chemical Reaction Singh [17]Exact solution of an
oscillatory MHD flow in a channel filled with porous medium.
Chenna Kesavaiah and Sudhakaraiah [4]A note on heat
transfer to magnetic field Oscillatory flow of a visco-elastic
fluid.
2. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org960
Therefore, the objective of the present investigation in to study
the two dimensional unsteady free convection oscillatory flow
of an elastico-viscous fluid past an impulsively started infinite
vertical plate in the presence of constant suction, heat flux and
heat generation. The effects of elastic parameter on velocities
and temperature fluids are discussed in detail. Also the results
are in very good agreement with the results of Chaudhary [3]
in the absence of heat absorption.
2. MATHEMATICAL ANALYSIS
We consider a two dimensional, unsteady free convection flow
of an elastico-viscous fluid past a steadily moving infinite
porous plate with constant suction, heat flux and heat
generation. In Cartesian co-ordinate system the x axis taken
along the plate in the upward direction, being the direction of
the flow and
y axis is taken normal to the plate. Let the
component of velocity
,u v along
,x y directions
respectively. Under these assumptions the appropriate
governing equations of continuity momentum and energy are
given by
v
0
y
(1)
2
2
3 3
2 3
v ( )
v
u u U u
g T T
t y t y
k u u
y t y
(2)
22
2
0
v
p p
p
T T T u
t y c y c y
Q
T T
c
(3)
The boundary conditions are
0
0 , 0, ,
0 0, ,
, , ,
For t u y t T y t T
T q
For t u t U
y
u t U t T t T
(4)
Where 0U
is the constant velocity of moving porous plate and
T
is its temperature, q is the heat flux per unit area, per unit
time.
The continuity equation (1) gives
0v v (5)
Where 0v ( 0) is suction velocity of the fluid through the
porous plate.
Where t is time,
,vu are the velocity components along
and perpendicular to the porous plate, g acceleration due to
gravity, T the fluid temperature inside the thermal boundary
layer,
T
temperature away to the porous plate, kinematic
viscosity, k the elastic parameter, the thermal conductivity
of the plate, pc
the specific heat of the fluid under constant
pressure,
the coefficient of volumetric expansion of the
fluid, U is the free stream velocity,k is Elastic parameter, wT
is Constant velocity of moving porous plate temperature,
U0is the constant velocity of moving porous plate, v0 the
suction velocity of the fluid through the porous plate, is
kinematic viscosity, density of the fluid, is non-
dimensional temperature, is coefficient of volumetric
expansion of the fluid.
Now in order to non-dimensionalize equations (2) and (3) we
introduce the following non-dimensional quantities
2
0 0
0 0
0 0
2
0
2 2 2
0 0 0
2 3
0 0
v v
, , ,
v
, ,
v
v v
, ,
v
p
p
p
y t u U
y t u U
U U
cT T Q
P
q c
k U g q
k E G
q c U
(6)
In view of above non-dimensional quantities, equations (2)
and (3) becomes
2 3 3
2 2 3
u u U u u u
G k
t y t y y t y
(7)
22
2
1 u
E
t y P y y
(8)
The corresponding boundary conditions are
3. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org961
0, 1, 1
, 0 ,
y u
y
y u U t
(9)
wherek is Elastic parameter, PrPrandtl number, Q The heat
flux per unit area, per unit time, 0Q Dimensional Heat
absorption coefficient,
Heat source parameter
In order to solve coupled nonlinear systems, we assume that
the following Lighthill[10], i.e., there exist a mean steady flow
and it is superimposed on the unsteady oscillatory flow. Then,
in the neighborhood of the plate, we represent the velocity and
temperature fields as
int
0 1
int
0 1
,
,
u y t u y u y e
y t y y e
(10)
and for free stream
int
1U t e
where is a small constant quantity << 1.
Putting equation (10) in (7) and (8) and equating like powers
and neglecting coefficient of
2
, we get
0 0 0 0ku u u G
(11)
1 1 1 1 11ku kin u u inu in G
(12)
2
0 0 0 0P P PEu (13)
1 1 1 0 12P in P PEu u
(14)
where prime denotes differentiation with respect to y.
Corresponding boundary conditions are
0 1
0 1
0 1 0 1
0, 1, 0, 1, 0
, 1, 1, 0, 0
y u u
y y
y u u
(15)
Now, equations (11) and (12) are third-order differential
equations when 0k and for 0k they reduced to
equations governing the Newtonian fluid. Hence, the presence
of the elasticity of the fluid increases the order of the
governing equations from two to three and therefore, they
need three boundary conditions for their unique solution. But
there are prescribed only two boundary conditions in equation
(15). Therefore for a unique solution, we follow Beard and
Walters [22] and assume that the solution in the form
2
1 2
2
1 2
0
0
i i i
i i i
u y u y ku y k
y y k y k
(16)
Where
, 0,1i iu i
are the mean
0i
and the
fluctuating
1i
parts of velocity and temperature
respectively, as k is small for elastico-viscous fluid equation
(16) is valid. Introducing (16) into (11)-(14), we get
01 01 01u u G (17)
02 02 02 01u u G u
(18)
11 11 11 11u u inu in G
(19)
12 12 12 12 11 11u u inu G u inu
(20)
2
01 01 01 01P P PEu
(21)
02 02 02 01 022P P PEu u
(22)
11 11 11 01 112P in P PEu u
(23)
12 12 12
01 12 11 022
P in P
PE u u u u
(24)
and the corresponding boundary conditions are
01 02 11 12
01 02 11 12
1, 0
0
' 1, ' ' ' 0
u u u u
y
(25)
where dash denotes differentiation with respect to y.
4. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org962
01 02 11 12
01 02 11 12
1, 0, 1, 0
0, 0, 0, 0
u u u u
y
The system of equations (17) – (24) are still coupled
nonlinear, we can assume that
01 011 012 02 021 022
11 111 112 12 121 122
01 011 012 02 021 022
11 111 112 12 121 122
,
,
,
,
u u Eu u u Eu
u u Eu u u Eu
E E
E E
(26)
where is E Eckert number and very small for an
incompressible fluid.
Substituting equation (26) in (17) - (24), equating the
coefficient of different powers of E and neglecting
coefficient of
2
E and using equation (25) we get
011 011 011u u G
(27)
012 012 012u u G
(28)
021 021 021 011u u G u
(29)
022 022 022 012u u G u
(30)
111 111 111 111u u inu in G
(31)
112 112 112 112u u inu G
(32)
121 121 121 121 111 111u u inu G u in u
(33)
122 122 122 122 112 112u u inu G u in u
(34)
011 011 011 0P P
(35)
2
012 012 012 011P P Pu
(36)
021 021 021 0P P
(37)
022 022 022 011 0212P P Pu u
(38)
111 111 111 0P in P
(39)
112 112 112 011 1112P in P Pu u
(40)
121 121 121 0P in P
(41)
122 122 122
011 121 021 1112
P in P
P u u u u
(42)
and the corresponding boundary conditions are
011 012 111 112
011 012 111 112
0 0, 0
1, 0
y u u u u
(43)
where dashes denotes differentiation with respect to y
011 012 112 111
011 012 111 112
1, 0, 1
0, 0
u u u u
y
The solutions of the above mentioned differential equations
consistent with the boundary conditions (43) for unsteady flow
field have been obtained but not presented here for the sake
of brevity.
With the convection those real parts of complex number have
physical significance in the problem, the velocity and
temperature field can be expressed in fluctuating part as
0
0
, cos sin
, cos sin
r i
r i
u y t u y M nt M nt
y t y T nt T nt
(44)
where
1
1
r i
r i
M i M u
T iT
(45)
Hence expressions for transient velocity, temperature field for
2
nt
are
0, ,
2
iu y u M
n
(46)
5. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org963
0, ,
2
iy T
n
(47)
Skin friction
Skin friction
at plate, in terms of amplitude and phase is
0
0
cos
y
u
N nt
y
where
1
0
r r
y
u
N N iN
y
(48)
and phase angle
tan i
r
M
M
(49)
The expressions (46) – (47) and (48) – (49) will be used for
numerical calculation of the velocity, temperature field and for
the skin friction and phase of the skin friction respectively.
3. RESULT AND DISCUSSIONS
The purpose of this study is to bring out the effects of elastico-
viscous parameter and heat absorption parameter on the free
convective flow and heat transfer characteristics. The elastico-
viscous effect is exhibited through the non-dimensional
parameter k. The corresponding results for Newtonian fluid
can be deduced from the above results by setting k= 0 and it is
worth mentioning here that these results coincide with that of
Ahmed et. al. Numerical evaluation of analytical results
reported in the previous section was performed and a
representative set of results is reported graphically for two
cases viz. (i) for cooling of the plate (G > 0) and (ii) for
heating of the plate (G < 0). The obtained results are illustrated
in Figs. 1 to 14. The values of P (Prandatl number) are chosen
in such a way that it represent Gasoline at 20°C (P = 9.4) and
water at 4°C (P = 11.13), whereas E is taken small for
incompressible fluid.
For the case of different values of thermal Grashofnumber G ,
the mean velocity profiles are shown in figure 1. As expected,
it is observed that an increase in G leads to rise in the values
of velocity due to enhancement in boundary force. In addition
the curve show that the peak values of the velocity increases
rapidly near the plate and there after it decreases as distance
(y) increases. It is also observed that the mean velocity of the
elastic-viscous fluid is greater than the Newtonian fluid.
Figures 2 and 3 are plotted mean velocity profiles against y for
different values of heat absorption parameter
. It is observed
that in both the cases mean velocity of the elastico – viscous
fluid is less than that of Newtonian fluid. The maximum
velocity occurs near the plate and thereafter it decreases as
distance (y) increases. An increase in
leads to decrease in
the mean velocity. From figure 4 it is observed that mean
velocity of the elastico – viscous fluid is greater than that of
Newtonian fluid. The maximum velocity occurs near the plate
and thereafter it decreases as distance (y) increases. An
increase in E the mean velocity increases. Figures(5)-(11)
represent the temperature profiles for 0G and 0G ,
respectively for different values of Eckret number (E),
Grashof number (G), Prandtl number (P) and heat absorption
number (
). It is observed that for cooling of the plate (G >
0), an increase in the above said parameters decreases the
temperature. The increase of Prandtl number results in the
decrease of temperature distribution. This is due to the fact
that there would be a decrease of thermal boundary layer
thickness with the increase of Prandtl number. In the case of
heating of the plate i.e. for G < 0, an increase in E leads to fall
in the temperature (fiure-9). It is also concluded that for
electrolytic solution, temperature falls exponentially. While
reversal effect is observed (fig10 and 11) for P and
. It is
observed from figure 12 that the mean velocity of the elastico
– viscous fluid is greater than that of Newtonian fluid. The
maximum velocity occurs near the plate and thereafter it
decreases as distance (y) increases. An increase in Prandtl
number P the mean velocity decreases. Figure 13 gives the
mean velocity profile for heating of the plate
0, 0G E
.
From this we conclude that mean velocity of the Newtonian
fluid is less than that of elastico – viscous fluid. The minimum
value of the velocity occurs near the plate and it increases as
the y increases. Velocity distribution decreases as E increases.
Figure 14 gives the mean velocity profile for heating of the
plate
0, 0G E
.From this we conclude that mean
velocity of the Newtonian fluid is greater than that of elastico
– viscous fluid. The minimum value of the velocity occurs
near the plate and it increases as the y increases. The velocity
profiles decreases with increasing Prandtl number. Physically,
this is true because the increase in the Prandtl number is due to
increase in the viscosity of the fluid which makes the fluid
thick and hence a decrease in the velocity of the fluid.
ACKNOWLEDGEMNETS
The authors are highly thankful to Sri Venkateswara
University, Tirupati, AP, Inida to provide all the facilities to
do this research work.
REFERENCES
[1] Beg, O.A., Takhar, H.S., and Singh, A.K., Multi-
parameter Perturbation Analysis of Unsteady
6. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org964
Oscillatory Magneto-convection in Porous Media with
Heat Source Effects, International Journal of Fluid
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[2] Burak,V.S, Volkov, S.V, Martyneko,O.G, Kharmastov,
P.P and Sikh, I.A, Free convection heat transfer on a
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Mass Trans. Vol. 38 (1) (1995), p. 155.
[3] Chaudhary, R.C,.andAbhay Kumar Jha, Free
convection oscillatory flow of an elastico-viscous fluid
past an impulsively started infinite vertical plate with
constant heat flux, Far East Journal of Applied
Mathematics.31 (2008), pp. 337-352.
[4] Chenna Kesavaiah D and Sudhakaraiah A: A note on
Heat Transfer to Magnetic Field Oscillatory Flow of a
Viscoelastic Fluid, International Journal of Science,
Engineering and Technology Research (IJSETR), Vol.
2, (5), 2013, pp. 1007-1012
[5] Devika B, SatyaNarayana P. V and Venkataramana S:
MHD Oscillatory Flow of a Viscoelastic Fluid in a
Porous Channel with Chemical Reaction, International
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[6] Erickson, L.E., Fan, L.T. and Fox, V.G.: Heat and mass
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[8] Kolani, P.N: Phys. Fluids, 10,( 1967), p. 1344.
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distribution, J.Heat Trans, 144 (1992), p. 909.
[10] Lighthill, M.J., The response of laminar skin friction
and heat transfer to fluctuation in the stream velocity,
Proc.Soc.London Ser.A 224, (1954), 1.
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mixed convection about a vertical plate with prescribed
temperature or heat flux, ZAMM 74 (1994), p. 129.
[12] Pantokraters. A, Laminar free convection in water with
variable physical properties adjacent to vertical plate
with uniform heat flux, Int.J.Heat Mass Trans. 46
(2003), p. 725.
[13] Revankar. S.T, Free convection effects on a flow past
an impulsively started or oscillating infinite vertical
plate, Mech.Research Comm. 27 (1981), p. 241.
[14] Sakiadis, B.C.: Boundary layer behavior on continuous
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[15] Sharma, P.R. and Gocher, D.K.: J. Ultra Scientist Phyl.
Sciences, India, (1998), 11, p. 312.
[16] Singh A.K, Oscillating free convection flow of an
elastico-viscous flow past an impulsively started
infinite vertical plate – I, Ind.J.Tech. 27, (1984), 245.
[17] Singh K. D: “Exact solution of an oscillatory MHD
flow in a channel filled with porous medium”, Int. J. of
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an elastico – viscous fluid past an infinite vertical plate
with constant suction. Chem.Engg.Sci. 26 (1971), p.
2043.
[19] SudheerBabu. M and SatyaNarayana. P.V., Effects of
the chemical reaction and radiation absorption on
free convection flow through porous medium with
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BIOGRAPHIES:
D Chenna Kesavaiah: Received B. Sc
from Nagarjuna University, Guntur, M. Sc
from Jawaharlal Nehru Technological
University College of Engineering,
Hyderabad, Ph. D from Sri Venkateswara
University, Tirupati, AP, India, and
working as Sr. Asst. Professor in Visvesvaraya College of
Engineering & Technology, Greater Hyderabad, Andhra
Pradesh, India.
P.V. Satyanarayana: Received Graduation
from Silver Jubilee Degree college, Kurnool.
He completed M.Sc., M.Phil., Ph.D. in
Mathematics from Sri Venkateswara
University, Tirupati. Presently he is working
as Assistant Professor (Senior) of
Mathematics at VIT University, Vellore, TN, India.
A Sudhakaraiah: Received B. Sc, M. Sc,
Ph. D from Sri Venkateswara University,
Tirupati, and Working as Assistant
Professor, Department of Future studies, Sri
Venkateswara University, Tirupati, Andhra
Pradesh, India.
S. Venkataramana Received M. Sc., M.
Phil and Ph D from Sri Venkateswara
University, Tirupati, AP, India and
working as Professor in Sri Venkateswara
University, Tirupati, AP, India.
7. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org965
0 1 2 3 4
0.9
1
1.1
1.2
1.3
1.4
1.5
y
Fig 1.Mean velocity profiles for cooling of the plate E=0.01
u0
G=1.0,2.0,3.0,4.0
Newtonian fluid
Non-Newtonian fluid
0 1 2 3 4 5
0.8
1
1.2
1.4
1.6
1.8
2
2.2
2.4
2.6
2.8
y
Fig 2.Mean velocity profiles for cooling plate, E = 0.01, G > 0
u0
=1.0,2.0,3.0,4.0
Non-Newtonian fluid
Newtonian fluid
0 1 2 3 4 5
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
y
Fig 3.Mean velocity profile of the cooling plate, G > 0
u0
E=0.1,0.3,0.5,0.7
Newtonian fluid
Non-Newtonian fluid
0 1 2 3 4
1
1.002
1.004
1.006
1.008
1.01
1.012
1.014
y
Fig 4.Mean velocity profiles cooling of the plate, E = 0.01, G > 0
u0
P=0.5,0.7,0.9,1.1
Non-Newtonian fluid
Newtonian fluid
0 0.5 1 1.5 2
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
y
Fig 5. Mean temperature profiles, G>0
0
E=0,0.1,0.2,0.3
Newtonian fluid
Non-Newtonian fluid
0 0.5 1 1.5 2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
y
Figure 9 Fig 6. Mean temperature profiles cooling of the plate E=0.01
0
G=0,0.2,0.3,0.4
Newtonian fluid
Non- Newtonian fluid
0 0.5 1 1.5 2
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
y
Fig 7.Mean temperature profiles cooling of the plate E=0.01, G>0
0
P=0.5,0.7,0.9,1.1
Newtonian fluid
Non-Newtonian fluid
0 0.5 1 1.5 2 2.5 3
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
y
Fig 9.Mean velocity for heating of the plate E = -0.01, G < 0
u0
Newtonian fluid
Non-Newtonian fluid
E=0.5,0.7,0.9,1.1
8. IJRET: International Journal of Research in Engineering and TechnologyISSN: 2319-1163
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Volume: 02 Issue: 06 | Jun-2013, Available @ http://www.ijret.org966
0 0.5 1 1.5 2 2.5 3
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
1.05
y
Fig 10.Mean velocity for heating of the plate E = -0.01, G < 0
u0
P=0.5,0.7,0.9,1.1
Newtonian fluid
Non-Newtonian fluid
0 1 2 3 4
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
y
Fig 11. Mean velocity for heating of the plate E= - 0.01, G < 0
u0
Non-Newtonian fluid
Newtonina fluid
= 1.0,2.0,3.0,4.0
0 0.5 1 1.5 2
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
y
Fig 12. Mean temperature heating of the plate, G < 0
0
E=1.0,2.0,3.0,4.0
Newtonian fluid
Non-Newtonian
fluid
0 0.2 0.4 0.6 0.8 1
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
y
Fig 13.Mean temperature heating of the plate E=-0.01, G <0
0
Non- Newtonian fluid
Newtonian fluid
=1.0,2.0,3.0,4.0
0 0.2 0.4 0.6 0.8 1
-4
-3
-2
-1
0
1
2
y
Fig 14 Mean temperature heating of the plate E=-0.01, G < 0
0
Non-Newtonian fluid
Newtonian fluid
P=0.5,0.6,0.7,0.8