This document presents a study on the performance analysis of a vertical axis wind turbine (VAWT) with straight blades (called a Giromill configuration) using computational fluid dynamics (CFD) simulations and experiments.
The study analyzed the effects of parameters like air velocity, angle of attack, and number of blades. The maximum power coefficients from 3D CFD simulations were 30.49% for a 4-blade design and 33.89% for a 6-blade design. Experimental testing showed maximum power coefficients of 25.11% and 27.90% respectively, indicating fair agreement with CFD results. Increasing the number of blades and airflow velocity, and decreasing the angle of attack, led to higher power coefficients in
IRJET- Effects of Dimples on Aerodynamic Performance of Horizontal Axis W...IRJET Journal
This document discusses research into the effects of adding dimples to the surfaces of horizontal axis wind turbine blades. It aims to investigate how dimples impact the aerodynamic performance of wind turbine blades. The researchers used computational fluid dynamics software to simulate flow over a baseline wind turbine blade design with and without various dimple configurations. The simulations found that blades with dimples experienced delayed flow separation, resulting in enhanced aerodynamic performance and increased power extraction compared to the baseline blade without dimples. Validation with experimental wind tunnel testing of a scaled down model supported the numerical results.
This document discusses various design aspects of wind turbine blades and failures that can occur due to icing. It begins with an introduction to wind turbines and the dominance of horizontal axis designs. It then covers aerodynamic design principles for blades, including lift forces, drag forces, and the importance of high lift-to-drag ratios. The document reviews key design loads on blades from aerodynamic forces, gravity, centrifugation, gyroscopic effects, and operational conditions. It highlights icing as a cause of blade failures and describes methods used to analyze blade loads and stresses.
Development of Single Hydraulic Cylinder Operated Sheet Metal Bending MachineIRJET Journal
This document describes the development of a single hydraulic cylinder operated sheet metal bending machine. It aims to maximize the forces generated by the hydraulic cylinder to make the machine lighter and less costly.
The key components of the machine include a lever system to convert the horizontal forces from the cylinder into a vertical downward bending force. A link connects the lever to an upper beam that carries the bending load. Through innovative use of the lever and linkage, both the pushing and pulling forces of the hydraulic cylinder can be utilized for bending, rather than having the pulling force wasted.
An analysis is presented to determine the required bending force based on the material properties and dimensions of the sheet being bent. This force calculation is used to design the machine components
Stress and Vibration Analysis of Turbine RotorIRJET Journal
This document summarizes the design and analysis of a turbine rotor intended to operate at speeds between 30,000-50,000 RPM. It discusses:
- Designing a blisk rotor using axi-symmetric modeling for stress analysis and optimization.
- Material selection for the rotor, with titanium alloy found to reduce thermal stresses compared to nickel alloy.
- Dynamic analysis showing the first critical speed to be 34,176 RPM, well above the operating speed.
- Stress analysis of the optimized rotor design found highest stresses of 451 MPa to be below the material yield strength.
- The rotor design was concluded to withstand the intended operating stresses and speeds.
Rotor is an very important part in the machines,especially in the rotating machines like gas and steam turbines. In this paper steam turbine rotor is analysed by using finite elements. In the complex systems, many of the engineering problems, it is difficult to solve the problem by closed form or exact solution method. Then we have to go for some numerical/approximate method for solving the problem. There are lot of numerical/approximate methods available.
Design procedure of an electrohydraulic driveeSAT Journals
Abstract Aerodynamicists use wind tunnel to test models as well as for proposed aircraft components and engines. In order to keep these models fixed in place for testing, ground based equipment is essential. Electrohydraulic drives form the back bone of such type of mechanism which requires continuous motion for life time operations with controlled motion for start stop and bi-directional motion mechanisms. Focus of this paper is on systematic approach for optimal designing of a typical electrohydraulic drive that will provide roll motion to the testing model with emphasis on reliability of the system. This paper further highlights the design, selection, testing and qualification procedures of different elements of the drive and the electrohydraulic drive assembly as a whole. Keywords - Design, Develop, Electrohydraulic roll drive, Spindle.
This work was aimed at developing a computational model following certain standards that are important to turbo machinery. Numerical and experimental investigations have been carried out on a two bladed savonius rotor by varying certain parameters of the turbine namely blade shape, blade profile, aspect ratio of the turbine and position of vent on the blade. For numerical investigation, commercial computational fluid dynamic (CFD) software ANSYS-FLUENT has been used. The results obtained have been validated with established experimental results. Investigations involving the variation of Aspect ratio have been done completely through experimentation. For the other cases, the obtained numerical results have been validated with the established experimental values. For the investigation regarding variation of blade shape, the length of semi minor axis has been changed and simulations have been carried out. Also, in the blade a vent has been introduced and its best position determined. Finally, new blade shapes have been designed and simulations carried out to find the optimum one. All these cases were computed at two different Reynolds number specifically 150000 and 80000. The new configurations gave better results than that for the conventional one.
Development and design validation of pneumatic tool for stem seal collet fi...Dr.Vikas Deulgaonkar
The present work deals with the design development and design validation of special purpose pneumatic tool to optimize the steps in assembly and consequently production process. An attempt is made to develop a pneumatic tool that uses power of compressed air to generate a force enough to press the stem seal and the collet, collet cup collectively. Detailed calculations of section properties of various members of the tool assembly are carried out. Calculation for force to be generated is done by considering possibilities i.e. hydraulic generation and pneumatic. Prior to fabrication, detailed CAD modeling of each component of assembly is carried out using CATIA V5 software which gives a correct perception of the assembly and its components. Fabrication of each component of the assembly is carried out by various manufacturing processes as Grinding, milling, drilling. To enhance surface hardness induction hardening is carried out. Close correlation between the calculated and generated force validates the design.
IRJET- Effects of Dimples on Aerodynamic Performance of Horizontal Axis W...IRJET Journal
This document discusses research into the effects of adding dimples to the surfaces of horizontal axis wind turbine blades. It aims to investigate how dimples impact the aerodynamic performance of wind turbine blades. The researchers used computational fluid dynamics software to simulate flow over a baseline wind turbine blade design with and without various dimple configurations. The simulations found that blades with dimples experienced delayed flow separation, resulting in enhanced aerodynamic performance and increased power extraction compared to the baseline blade without dimples. Validation with experimental wind tunnel testing of a scaled down model supported the numerical results.
This document discusses various design aspects of wind turbine blades and failures that can occur due to icing. It begins with an introduction to wind turbines and the dominance of horizontal axis designs. It then covers aerodynamic design principles for blades, including lift forces, drag forces, and the importance of high lift-to-drag ratios. The document reviews key design loads on blades from aerodynamic forces, gravity, centrifugation, gyroscopic effects, and operational conditions. It highlights icing as a cause of blade failures and describes methods used to analyze blade loads and stresses.
Development of Single Hydraulic Cylinder Operated Sheet Metal Bending MachineIRJET Journal
This document describes the development of a single hydraulic cylinder operated sheet metal bending machine. It aims to maximize the forces generated by the hydraulic cylinder to make the machine lighter and less costly.
The key components of the machine include a lever system to convert the horizontal forces from the cylinder into a vertical downward bending force. A link connects the lever to an upper beam that carries the bending load. Through innovative use of the lever and linkage, both the pushing and pulling forces of the hydraulic cylinder can be utilized for bending, rather than having the pulling force wasted.
An analysis is presented to determine the required bending force based on the material properties and dimensions of the sheet being bent. This force calculation is used to design the machine components
Stress and Vibration Analysis of Turbine RotorIRJET Journal
This document summarizes the design and analysis of a turbine rotor intended to operate at speeds between 30,000-50,000 RPM. It discusses:
- Designing a blisk rotor using axi-symmetric modeling for stress analysis and optimization.
- Material selection for the rotor, with titanium alloy found to reduce thermal stresses compared to nickel alloy.
- Dynamic analysis showing the first critical speed to be 34,176 RPM, well above the operating speed.
- Stress analysis of the optimized rotor design found highest stresses of 451 MPa to be below the material yield strength.
- The rotor design was concluded to withstand the intended operating stresses and speeds.
Rotor is an very important part in the machines,especially in the rotating machines like gas and steam turbines. In this paper steam turbine rotor is analysed by using finite elements. In the complex systems, many of the engineering problems, it is difficult to solve the problem by closed form or exact solution method. Then we have to go for some numerical/approximate method for solving the problem. There are lot of numerical/approximate methods available.
Design procedure of an electrohydraulic driveeSAT Journals
Abstract Aerodynamicists use wind tunnel to test models as well as for proposed aircraft components and engines. In order to keep these models fixed in place for testing, ground based equipment is essential. Electrohydraulic drives form the back bone of such type of mechanism which requires continuous motion for life time operations with controlled motion for start stop and bi-directional motion mechanisms. Focus of this paper is on systematic approach for optimal designing of a typical electrohydraulic drive that will provide roll motion to the testing model with emphasis on reliability of the system. This paper further highlights the design, selection, testing and qualification procedures of different elements of the drive and the electrohydraulic drive assembly as a whole. Keywords - Design, Develop, Electrohydraulic roll drive, Spindle.
This work was aimed at developing a computational model following certain standards that are important to turbo machinery. Numerical and experimental investigations have been carried out on a two bladed savonius rotor by varying certain parameters of the turbine namely blade shape, blade profile, aspect ratio of the turbine and position of vent on the blade. For numerical investigation, commercial computational fluid dynamic (CFD) software ANSYS-FLUENT has been used. The results obtained have been validated with established experimental results. Investigations involving the variation of Aspect ratio have been done completely through experimentation. For the other cases, the obtained numerical results have been validated with the established experimental values. For the investigation regarding variation of blade shape, the length of semi minor axis has been changed and simulations have been carried out. Also, in the blade a vent has been introduced and its best position determined. Finally, new blade shapes have been designed and simulations carried out to find the optimum one. All these cases were computed at two different Reynolds number specifically 150000 and 80000. The new configurations gave better results than that for the conventional one.
Development and design validation of pneumatic tool for stem seal collet fi...Dr.Vikas Deulgaonkar
The present work deals with the design development and design validation of special purpose pneumatic tool to optimize the steps in assembly and consequently production process. An attempt is made to develop a pneumatic tool that uses power of compressed air to generate a force enough to press the stem seal and the collet, collet cup collectively. Detailed calculations of section properties of various members of the tool assembly are carried out. Calculation for force to be generated is done by considering possibilities i.e. hydraulic generation and pneumatic. Prior to fabrication, detailed CAD modeling of each component of assembly is carried out using CATIA V5 software which gives a correct perception of the assembly and its components. Fabrication of each component of the assembly is carried out by various manufacturing processes as Grinding, milling, drilling. To enhance surface hardness induction hardening is carried out. Close correlation between the calculated and generated force validates the design.
Cfd analysis in an ejector of gas turbine engine test bedIAEME Publication
This document summarizes a computational fluid dynamics (CFD) analysis of an ejector system used in a gas turbine engine test bed. The CFD analysis examined the ejector's performance with and without a debris guard. Without the guard, reducing the back pressure was found to achieve "double choking" at 0.1 bar, maximizing the entrainment ratio. With the guard, there was an 8.56% total pressure loss and 15% reduction in mass flow. The CFD analysis determined the impact of a debris guard and varying back pressure on the ejector's entrainment ratio and pressure losses.
This document describes the design process for three wind turbine blades. It includes:
1) Evaluation of the test rig to determine optimal generator speed of 400 rpm and wind speed distribution.
2) Design calculations using Betz's law and tip speed ratio to select an NACA 4412 airfoil profile for maximum power extraction.
3) Consideration of materials and manufacturing methods for the blades based on structural requirements and sustainability.
4) Description of blade design, manufacturing, testing, results analysis, and conclusions on optimizing power output from the wind turbine.
This document summarizes the design, construction, and testing of a flexible wind turbine blade. The blade was designed to passively control the rotor and reduce aerodynamic loads through deformation in response to changing wind speeds. A curved blade geometry was modeled and tested on a small scale wind turbine rotor. Both static and dynamic tests were performed and results compared to a rigid blade rotor. The flexible blade achieved the intended deformation and changes in pitch angle to better control the rotor across a range of wind speeds.
Review Paper on New Automotive Camless Engineijtsrd
Internal combustion engine occupies a significant spot in present day. with the most recent plan alteration in different part being advanced to improve the efficiency and generally speaking performance, one segment has been kept untouched that is camshaft. Cam control the breathing channels of the engine that is the planning of valves through which fuel air mixture enters and fumes is driven out. with help of push rods , rocker arms, stiff springs. With increasing performance demands engine specialists and researchers over the world are perusing radical cam less structure which promises to give ICEs a greater improvement in effectiveness. The fantasy about accomplishing cam less technology is shutting reality at rapid rate. With cam less technology put into practice, the engine power can be improved, pollutant emissions could be controlled and better mileage is acquired, in addition to that the whole mechanism of pulley or belt drive is replaced by the camless engine with greater efficiency than earlier i.e intake and exhaust of the IC engine by camless actuation technology with the camless engine variable valve timing also controls the intake and exhaust gas recirculation. Its one of the major advantage is it offers continously variable and independent control of all types of motion. Priyanshu Kumar Tiwari | Pushkar Verma | Prince Tiwari | Vijay Kumar Gupta ""Review Paper on New Automotive 'Camless Engine'"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020,
URL: https://www.ijtsrd.com/papers/ijtsrd29892.pdf
Paper Url : https://www.ijtsrd.com/engineering/automotive-engineering/29892/review-paper-on-new-automotive-camless-engine/priyanshu-kumar-tiwari
Numerical analysis of Vertical Axis Wind Turbinehasan47
This document summarizes a numerical analysis of a vertical axis wind turbine conducted by researchers at Khulna University of Engineering & Technology in Bangladesh. The researchers used computational fluid dynamics to model the turbine and analyze performance parameters. They generated a mesh model of the turbine blades and airfoil and simulated rotation using a sliding mesh technique. The analysis found that the turbine achieved an optimal power coefficient of 0.34 at a tip speed ratio of 4.5. The results of the numerical study could help with practical implementation of vertical axis wind turbines.
The flow through the turbine components is associated with energy losses and hence energy
output from turbine is always less than the input energy. The global performance of turbine is
characterized by its overall efficiency. The casing has spiral shape and hence has swirling flow and
flow is subjected to frictional and vortex losses. The passage in stay ring and distributor has solid
vanes and flow passes through the ducts between the vanes is subjected mostly frictional losses.
Since runner is the most important component of mixed flow turbine and its design i.e. the blade
profile, number of blades plays vital role in overall performance of turbine at all operating regimes.
In the present work the numerical simulation of hydraulic Francis turbine is carried out by using
ANSYS software. The losses in each part of turbine are computed at different operating conditions
by changing the solidity of existing runner. The numerical results for efficiency of existing runner
are validated with experimental values. This study can be used efficiently as a reliable tool for
the practical design and performance analysis of Francis hydraulic turbines.
This document describes a computational fluid dynamics (CFD) simulation of a 2D vertical axis wind turbine. It includes:
1) A description of the turbine geometry, governing equations, computational domain, and boundary conditions for the CFD model.
2) Details of the meshing approach and solver settings used in the CFD software Fluent.
3) Results and discussion of the simulation including validation, time-averaged forces and moments on the blades, flow visualization of velocity and vorticity fields, and effects of varying wind speed.
Small scale vertical axis wind turbine designPhuong Dx
This document summarizes the design of a small-scale vertical axis wind turbine made of solid wood. An aerodynamic analysis was performed using a momentum-based model in a computer program to evaluate different parameters on turbine efficiency, torque, and acceleration. A three-bladed turbine design is proposed for further prototype testing. The results indicate that wood is a suitable material for the rotor construction, and further development of the computer algorithm is needed to better simulate flow conditions.
27_09_2010Design and Development of a Vertical Axis Micro Wind Turbine_MIMurat Islam CEng MIMechE
This document is a dissertation submitted for a Master of Science degree in mechanical engineering. It investigates the design and development of a vertical axis micro wind turbine (VAMWT). The dissertation includes chapters on the background, aims and objectives of the study, a literature review on wind energy and vertical axis wind turbines, concept design development, detailed design and manufacturing, experimentation and testing, design analysis, and conclusions. The study aims to understand wind power generation and design a micro wind turbine for residential or commercial use. It involves designing, testing, and analyzing a VAMWT using CAD, FEA, and experimental data to evaluate performance and suggest improvements.
IRJET- Rotor Dynamic Analysis of Driving Shaft of Dry Screw Vacuum PumpIRJET Journal
This document summarizes a study on analyzing the rotor dynamics of the driving shaft of a dry screw vacuum pump. Modal and harmonic analyses were performed on the shaft model in ANSYS to determine the natural frequencies, critical speeds, deflections, and stresses. Initially, modal analysis was used to generate a Campbell diagram showing the relationship between damped natural frequencies and rotational speed. Harmonic analysis was then conducted near identified critical speeds to calculate frequency responses. The shaft design was modified by adjusting unbalanced mass to avoid higher vibrations at critical speeds. Modal and harmonic analyses were repeated on the modified model, and results were compared to evaluate design improvements. The goal was to shift critical speeds higher to increase efficiency and lifetime of the shaft.
This document appears to be a presentation for a project review on the development of a connecting rod. It includes sections on the introduction, literature review, objectives, progress status, future work plan, and references. The literature review summarizes previous research on connecting rod design optimization, stress analysis, and manufacturing process improvement. The objectives are to reduce the cycle time for joint face machining and increase productivity. Progress shown includes analysis of current process times and plans for future machine selection and site visits to support work.
The document provides a design file compliance report for the Futurenergy 10kW wind turbine. It includes calculations to verify the strength and safety of turbine components according to international standards. Load calculations were performed using a simplified model for various operational conditions. Stresses were analyzed for critical components like the blades, shaft, and frame. Fatigue life and critical deflections were also evaluated. Test plans are outlined to verify the turbine's performance meets design specifications. The report demonstrates the turbine's design complies with standards for small wind turbines.
J.R.K Murthy has over 40 years of experience providing FEM analysis consulting services to engineering industries. He has a M.Tech from IIT Kanpur and has worked at Central Manufacturing Technologies Institute leading their FEM, advanced technology, and CNC divisions. He has extensive experience conducting structural, vibration, CFD, and thermal analyses using FEM tools like ANSYS. Some of his major projects include analysis of antenna structures, machine tool components, pressure vessels, mixing machines, and more. He has published over 22 research papers and conducted secondments at universities in Manchester and Berlin.
IRJET - Performance Comparison of a Small Size Rotor with Self Induced Instab...IRJET Journal
This document presents a performance comparison of stabilizing a small size rotor experiencing self-induced instability using sliding mode control and fractional-order control. It first introduces the challenges of stabilizing small rotors due to their size, then describes a proposed smart structure with embedded sensors, controllers, and piezoelectric actuators. It analyzes the rotor instability, derives equations of motion, and calculates the critical threshold speed. Finally, it proposes using fractional-order PID control and modulating the internal damping parameter to stabilize the rotor, as this approach allows shifting the critical speed beyond the operating speed more practically than alternative control methods.
GEOMETRIC OPTIMIZATION AND MANUFACTURING PROCESS OF SIX CYLINDER DIESEL ENGIN...Ijripublishers Ijri
The crankshaft is that part of an engine which translates reciprocating linear piston motion into rotation. To convert the
reciprocating motion into rotation, the crankshaft has "crank" or "crankpins", additional bearing surfaces whose axis is
offset from that of the crank, to which the "big ends" of the connecting rods from each cylinder attach.
The aim of the project work is to optimize the geometry shape of 6-cylinder diesel engine crank shaft to reduce the failures
and to reduce the weight. And also this project work will provide the brief explanation of manufacturing process.
Initially literature survey and data collection will be done to understand methodology.
Design calculations will be done to get parameters of object for drafting.
3D model will be prepared according to the obtained parameters.
Analysis will be conducted on crank shaft to rectify failures by optimizing geometric shape. Also best material will be
suggested by analyzing and comparing results with the variation of materials.
Mold tool design will be done and assembly will be prepared according to that.
Cnc program will be prepared for die set using cam
IRJET- Design and Fabrication of Wind and Solar Hybrid Power PlantIRJET Journal
1. The document describes the design and fabrication of a hybrid wind and solar power plant. It involves designing a vortex chamber wind turbine and integrating it with solar panels to harness both wind and solar energy.
2. Various components of the hybrid power plant are described, including the vortex chamber, vane holders, DC generator, and solar panels. Design calculations are shown for components like the main shaft, dynamo coupler shaft, and shaft bearings.
3. Testing of the vortex wind turbine prototype was conducted at different locations and it was able to generate power even at low wind speeds, making it suitable for domestic electric power needs in areas with low to medium wind resources. The hybrid design can help address India's large
Sandia National Laboratories conducted research on large-scale floating offshore vertical axis wind turbines (VAWTs) to reduce the high costs of offshore wind energy. The research included rotor design studies that analyzed different configurations, platform and mooring system design studies, developing simulation codes for VAWTs, and investigating innovations to address challenges. The goal was to improve understanding of the technical and economic feasibility of floating offshore VAWT systems through a series of analyses including a levelized cost of energy analysis.
Design and construction of vertical axis wind turbineIAEME Publication
This document describes the design and construction of a vertical axis wind turbine. It aims to generate enough electricity for domestic use in rural areas with minimal costs. The turbine is designed to be 1m in diameter and 1m in height to capture 1 square meter of wind. It uses three J-shaped blades made of galvanized iron sheets. Testing showed the turbine generated up to 26.4 watts of power, achieving an efficiency of 23.3%. While lower than theoretical maximum efficiency, the design shows potential for power generation in off-grid rural applications. Future work may aim to further improve efficiency through more optimized blade designs.
IRJET- Analysis for Optimum Design of Automotive FlywheelIRJET Journal
This document analyzes the design of automotive flywheels through finite element analysis to determine the optimum design. It discusses flywheel design considerations like geometry, rotational velocity, and material strength. Four different flywheel designs are modeled and analyzed using ANSYS software to calculate stresses, strains, and deformations from applied forces and rotational velocities. Both static structural and modal analyses are performed. The goal is to determine which flywheel design optimizes strength and energy storage capabilities while minimizing vibrations and loads on the shaft.
This document is a project report submitted by five students at Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, India in partial fulfillment of their Bachelor of Engineering degree in Mechanical Engineering. The project involves the design and fabrication of a vertical axis wind turbine, specifically a Savonius wind turbine. The report includes sections on literature review, problem definition, methodology, experimentation and results, and conclusions.
IRJET- Investigation of Effects of Trailing Edge Geometry on Vertical Axis Wi...IRJET Journal
This document investigates the effects of trailing edge geometry on the performance of a vertical axis wind turbine through computational fluid dynamics and structural analysis. It describes the design and analysis of a small-scale vertical axis wind turbine with modifications to the trailing edge shape of the blades. Computational fluid dynamics simulations were performed using ANSYS Fluent to analyze four different trailing edge shapes. Transient structural analysis was also conducted in ANSYS Workbench to determine stresses and deformations on the blades under fluid loading. The results were aimed to inform the design of a local wind turbine with improved trailing edge geometry.
Design and Analysis of Spiral Wind Turbine with Various Wind SpeedIRJET Journal
The document describes the design and computational fluid dynamics (CFD) analysis of a spiral wind turbine (SWT) with varying wind speeds. Key points:
- SWT is a new type of horizontal axis wind turbine with two spiraling blades wrapped around a teardrop-shaped shell, designed to harness both lift and drag forces from wind.
- A 3D SWT blade model was designed in AutoCAD Fusion 360 and meshed. CFD analysis using k-epsilon turbulence modeling was performed at wind speeds of 1, 5, 9, and 15 m/s.
- Results show SWT extracts more power than conventional turbines at lower wind speeds. Pressure is highest around the blade and lowest
Cfd analysis in an ejector of gas turbine engine test bedIAEME Publication
This document summarizes a computational fluid dynamics (CFD) analysis of an ejector system used in a gas turbine engine test bed. The CFD analysis examined the ejector's performance with and without a debris guard. Without the guard, reducing the back pressure was found to achieve "double choking" at 0.1 bar, maximizing the entrainment ratio. With the guard, there was an 8.56% total pressure loss and 15% reduction in mass flow. The CFD analysis determined the impact of a debris guard and varying back pressure on the ejector's entrainment ratio and pressure losses.
This document describes the design process for three wind turbine blades. It includes:
1) Evaluation of the test rig to determine optimal generator speed of 400 rpm and wind speed distribution.
2) Design calculations using Betz's law and tip speed ratio to select an NACA 4412 airfoil profile for maximum power extraction.
3) Consideration of materials and manufacturing methods for the blades based on structural requirements and sustainability.
4) Description of blade design, manufacturing, testing, results analysis, and conclusions on optimizing power output from the wind turbine.
This document summarizes the design, construction, and testing of a flexible wind turbine blade. The blade was designed to passively control the rotor and reduce aerodynamic loads through deformation in response to changing wind speeds. A curved blade geometry was modeled and tested on a small scale wind turbine rotor. Both static and dynamic tests were performed and results compared to a rigid blade rotor. The flexible blade achieved the intended deformation and changes in pitch angle to better control the rotor across a range of wind speeds.
Review Paper on New Automotive Camless Engineijtsrd
Internal combustion engine occupies a significant spot in present day. with the most recent plan alteration in different part being advanced to improve the efficiency and generally speaking performance, one segment has been kept untouched that is camshaft. Cam control the breathing channels of the engine that is the planning of valves through which fuel air mixture enters and fumes is driven out. with help of push rods , rocker arms, stiff springs. With increasing performance demands engine specialists and researchers over the world are perusing radical cam less structure which promises to give ICEs a greater improvement in effectiveness. The fantasy about accomplishing cam less technology is shutting reality at rapid rate. With cam less technology put into practice, the engine power can be improved, pollutant emissions could be controlled and better mileage is acquired, in addition to that the whole mechanism of pulley or belt drive is replaced by the camless engine with greater efficiency than earlier i.e intake and exhaust of the IC engine by camless actuation technology with the camless engine variable valve timing also controls the intake and exhaust gas recirculation. Its one of the major advantage is it offers continously variable and independent control of all types of motion. Priyanshu Kumar Tiwari | Pushkar Verma | Prince Tiwari | Vijay Kumar Gupta ""Review Paper on New Automotive 'Camless Engine'"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-2 , February 2020,
URL: https://www.ijtsrd.com/papers/ijtsrd29892.pdf
Paper Url : https://www.ijtsrd.com/engineering/automotive-engineering/29892/review-paper-on-new-automotive-camless-engine/priyanshu-kumar-tiwari
Numerical analysis of Vertical Axis Wind Turbinehasan47
This document summarizes a numerical analysis of a vertical axis wind turbine conducted by researchers at Khulna University of Engineering & Technology in Bangladesh. The researchers used computational fluid dynamics to model the turbine and analyze performance parameters. They generated a mesh model of the turbine blades and airfoil and simulated rotation using a sliding mesh technique. The analysis found that the turbine achieved an optimal power coefficient of 0.34 at a tip speed ratio of 4.5. The results of the numerical study could help with practical implementation of vertical axis wind turbines.
The flow through the turbine components is associated with energy losses and hence energy
output from turbine is always less than the input energy. The global performance of turbine is
characterized by its overall efficiency. The casing has spiral shape and hence has swirling flow and
flow is subjected to frictional and vortex losses. The passage in stay ring and distributor has solid
vanes and flow passes through the ducts between the vanes is subjected mostly frictional losses.
Since runner is the most important component of mixed flow turbine and its design i.e. the blade
profile, number of blades plays vital role in overall performance of turbine at all operating regimes.
In the present work the numerical simulation of hydraulic Francis turbine is carried out by using
ANSYS software. The losses in each part of turbine are computed at different operating conditions
by changing the solidity of existing runner. The numerical results for efficiency of existing runner
are validated with experimental values. This study can be used efficiently as a reliable tool for
the practical design and performance analysis of Francis hydraulic turbines.
This document describes a computational fluid dynamics (CFD) simulation of a 2D vertical axis wind turbine. It includes:
1) A description of the turbine geometry, governing equations, computational domain, and boundary conditions for the CFD model.
2) Details of the meshing approach and solver settings used in the CFD software Fluent.
3) Results and discussion of the simulation including validation, time-averaged forces and moments on the blades, flow visualization of velocity and vorticity fields, and effects of varying wind speed.
Small scale vertical axis wind turbine designPhuong Dx
This document summarizes the design of a small-scale vertical axis wind turbine made of solid wood. An aerodynamic analysis was performed using a momentum-based model in a computer program to evaluate different parameters on turbine efficiency, torque, and acceleration. A three-bladed turbine design is proposed for further prototype testing. The results indicate that wood is a suitable material for the rotor construction, and further development of the computer algorithm is needed to better simulate flow conditions.
27_09_2010Design and Development of a Vertical Axis Micro Wind Turbine_MIMurat Islam CEng MIMechE
This document is a dissertation submitted for a Master of Science degree in mechanical engineering. It investigates the design and development of a vertical axis micro wind turbine (VAMWT). The dissertation includes chapters on the background, aims and objectives of the study, a literature review on wind energy and vertical axis wind turbines, concept design development, detailed design and manufacturing, experimentation and testing, design analysis, and conclusions. The study aims to understand wind power generation and design a micro wind turbine for residential or commercial use. It involves designing, testing, and analyzing a VAMWT using CAD, FEA, and experimental data to evaluate performance and suggest improvements.
IRJET- Rotor Dynamic Analysis of Driving Shaft of Dry Screw Vacuum PumpIRJET Journal
This document summarizes a study on analyzing the rotor dynamics of the driving shaft of a dry screw vacuum pump. Modal and harmonic analyses were performed on the shaft model in ANSYS to determine the natural frequencies, critical speeds, deflections, and stresses. Initially, modal analysis was used to generate a Campbell diagram showing the relationship between damped natural frequencies and rotational speed. Harmonic analysis was then conducted near identified critical speeds to calculate frequency responses. The shaft design was modified by adjusting unbalanced mass to avoid higher vibrations at critical speeds. Modal and harmonic analyses were repeated on the modified model, and results were compared to evaluate design improvements. The goal was to shift critical speeds higher to increase efficiency and lifetime of the shaft.
This document appears to be a presentation for a project review on the development of a connecting rod. It includes sections on the introduction, literature review, objectives, progress status, future work plan, and references. The literature review summarizes previous research on connecting rod design optimization, stress analysis, and manufacturing process improvement. The objectives are to reduce the cycle time for joint face machining and increase productivity. Progress shown includes analysis of current process times and plans for future machine selection and site visits to support work.
The document provides a design file compliance report for the Futurenergy 10kW wind turbine. It includes calculations to verify the strength and safety of turbine components according to international standards. Load calculations were performed using a simplified model for various operational conditions. Stresses were analyzed for critical components like the blades, shaft, and frame. Fatigue life and critical deflections were also evaluated. Test plans are outlined to verify the turbine's performance meets design specifications. The report demonstrates the turbine's design complies with standards for small wind turbines.
J.R.K Murthy has over 40 years of experience providing FEM analysis consulting services to engineering industries. He has a M.Tech from IIT Kanpur and has worked at Central Manufacturing Technologies Institute leading their FEM, advanced technology, and CNC divisions. He has extensive experience conducting structural, vibration, CFD, and thermal analyses using FEM tools like ANSYS. Some of his major projects include analysis of antenna structures, machine tool components, pressure vessels, mixing machines, and more. He has published over 22 research papers and conducted secondments at universities in Manchester and Berlin.
IRJET - Performance Comparison of a Small Size Rotor with Self Induced Instab...IRJET Journal
This document presents a performance comparison of stabilizing a small size rotor experiencing self-induced instability using sliding mode control and fractional-order control. It first introduces the challenges of stabilizing small rotors due to their size, then describes a proposed smart structure with embedded sensors, controllers, and piezoelectric actuators. It analyzes the rotor instability, derives equations of motion, and calculates the critical threshold speed. Finally, it proposes using fractional-order PID control and modulating the internal damping parameter to stabilize the rotor, as this approach allows shifting the critical speed beyond the operating speed more practically than alternative control methods.
GEOMETRIC OPTIMIZATION AND MANUFACTURING PROCESS OF SIX CYLINDER DIESEL ENGIN...Ijripublishers Ijri
The crankshaft is that part of an engine which translates reciprocating linear piston motion into rotation. To convert the
reciprocating motion into rotation, the crankshaft has "crank" or "crankpins", additional bearing surfaces whose axis is
offset from that of the crank, to which the "big ends" of the connecting rods from each cylinder attach.
The aim of the project work is to optimize the geometry shape of 6-cylinder diesel engine crank shaft to reduce the failures
and to reduce the weight. And also this project work will provide the brief explanation of manufacturing process.
Initially literature survey and data collection will be done to understand methodology.
Design calculations will be done to get parameters of object for drafting.
3D model will be prepared according to the obtained parameters.
Analysis will be conducted on crank shaft to rectify failures by optimizing geometric shape. Also best material will be
suggested by analyzing and comparing results with the variation of materials.
Mold tool design will be done and assembly will be prepared according to that.
Cnc program will be prepared for die set using cam
IRJET- Design and Fabrication of Wind and Solar Hybrid Power PlantIRJET Journal
1. The document describes the design and fabrication of a hybrid wind and solar power plant. It involves designing a vortex chamber wind turbine and integrating it with solar panels to harness both wind and solar energy.
2. Various components of the hybrid power plant are described, including the vortex chamber, vane holders, DC generator, and solar panels. Design calculations are shown for components like the main shaft, dynamo coupler shaft, and shaft bearings.
3. Testing of the vortex wind turbine prototype was conducted at different locations and it was able to generate power even at low wind speeds, making it suitable for domestic electric power needs in areas with low to medium wind resources. The hybrid design can help address India's large
Sandia National Laboratories conducted research on large-scale floating offshore vertical axis wind turbines (VAWTs) to reduce the high costs of offshore wind energy. The research included rotor design studies that analyzed different configurations, platform and mooring system design studies, developing simulation codes for VAWTs, and investigating innovations to address challenges. The goal was to improve understanding of the technical and economic feasibility of floating offshore VAWT systems through a series of analyses including a levelized cost of energy analysis.
Design and construction of vertical axis wind turbineIAEME Publication
This document describes the design and construction of a vertical axis wind turbine. It aims to generate enough electricity for domestic use in rural areas with minimal costs. The turbine is designed to be 1m in diameter and 1m in height to capture 1 square meter of wind. It uses three J-shaped blades made of galvanized iron sheets. Testing showed the turbine generated up to 26.4 watts of power, achieving an efficiency of 23.3%. While lower than theoretical maximum efficiency, the design shows potential for power generation in off-grid rural applications. Future work may aim to further improve efficiency through more optimized blade designs.
IRJET- Analysis for Optimum Design of Automotive FlywheelIRJET Journal
This document analyzes the design of automotive flywheels through finite element analysis to determine the optimum design. It discusses flywheel design considerations like geometry, rotational velocity, and material strength. Four different flywheel designs are modeled and analyzed using ANSYS software to calculate stresses, strains, and deformations from applied forces and rotational velocities. Both static structural and modal analyses are performed. The goal is to determine which flywheel design optimizes strength and energy storage capabilities while minimizing vibrations and loads on the shaft.
This document is a project report submitted by five students at Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, India in partial fulfillment of their Bachelor of Engineering degree in Mechanical Engineering. The project involves the design and fabrication of a vertical axis wind turbine, specifically a Savonius wind turbine. The report includes sections on literature review, problem definition, methodology, experimentation and results, and conclusions.
IRJET- Investigation of Effects of Trailing Edge Geometry on Vertical Axis Wi...IRJET Journal
This document investigates the effects of trailing edge geometry on the performance of a vertical axis wind turbine through computational fluid dynamics and structural analysis. It describes the design and analysis of a small-scale vertical axis wind turbine with modifications to the trailing edge shape of the blades. Computational fluid dynamics simulations were performed using ANSYS Fluent to analyze four different trailing edge shapes. Transient structural analysis was also conducted in ANSYS Workbench to determine stresses and deformations on the blades under fluid loading. The results were aimed to inform the design of a local wind turbine with improved trailing edge geometry.
Design and Analysis of Spiral Wind Turbine with Various Wind SpeedIRJET Journal
The document describes the design and computational fluid dynamics (CFD) analysis of a spiral wind turbine (SWT) with varying wind speeds. Key points:
- SWT is a new type of horizontal axis wind turbine with two spiraling blades wrapped around a teardrop-shaped shell, designed to harness both lift and drag forces from wind.
- A 3D SWT blade model was designed in AutoCAD Fusion 360 and meshed. CFD analysis using k-epsilon turbulence modeling was performed at wind speeds of 1, 5, 9, and 15 m/s.
- Results show SWT extracts more power than conventional turbines at lower wind speeds. Pressure is highest around the blade and lowest
CFD Analysis Of Savonius Vertical Axis Wind Turbine: A ReviewIRJET Journal
This document reviews computational fluid dynamics (CFD) analysis of the Savonius vertical axis wind turbine. It discusses how CFD provides a less expensive and time-consuming alternative to experimental testing of wind turbine designs and configurations. The document outlines different CFD methods used like steady-state and transient simulations. It also summarizes key factors that affect Savonius turbine performance according to previous studies, such as aspect ratio, overlap ratio, number of blades, and influence of the stator and Reynolds number.
IRJET- Effect of Shroud Attachment on Power Generation on a Horizontal Axis W...IRJET Journal
This document discusses research into improving the power generation of horizontal axis wind turbines through the use of a shroud. It first presents the background research and numerical analysis conducted to optimize shroud design parameters like area ratio and length. Experimental testing was then done on scaled turbine models with and without an optimized shroud. The results showed that the shrouded turbine produced higher power efficiency than the unshrouded turbine at the same wind velocities, due to the increased airflow velocities produced by the shroud. Overall, the research demonstrates that shrouds have potential to improve wind turbine performance and efficiency.
THREE DIMENSIONAL STUDIES ON FLOW DISTRIBUTIONS IN SAVONIOUS ROTORSIRJET Journal
This document describes a three-dimensional computational fluid dynamics (CFD) analysis of flow distributions in Savonious wind rotors. The study aims to provide a more realistic understanding of rotor behavior compared to previous two-dimensional analyses. A basic two-bucket Savonious rotor design is modeled using commercial CFD software. Velocity, pressure, and flow patterns are analyzed at different sections along the rotor and compared to 2D results. The 3D analysis provides more detailed insight into fluid flow near the rotor ends and within the buckets compared to 2D analyses.
Structural Design and FEM Analysis of Bleeder in Steam Turbine CasingIRJET Journal
1) The document discusses the design and finite element analysis of a bleeder in a steam turbine casing. It provides calculations to determine the diameter of the bleeder pipe based on flow parameters.
2) A CAD model of the casing with integrated bleeder is generated and meshed. Boundary conditions representing pressure and displacement are applied for static structural analysis.
3) Von Mises stress, total deformation, and principal stresses are analyzed. Results show stresses and deformations within acceptable limits. Analysis of the full casing is also performed under pressure boundary conditions.
IRJET- Analysis of Centrifugal Pump Impellers with Modified Micro GroovesIRJET Journal
This document analyzes centrifugal pump impellers with modified microgrooves through computational fluid dynamics (CFD) simulations. It describes the design of smooth, rectangular microgroove, and optimized semi-circular microgroove impellers using Solidworks. CFD analysis was performed using ANSYS CFX to compare the velocity, pressure, and turbulent kinetic energy distributions as well as the overall pump performance between the different impeller designs. The results show that the semi-circular microgroove impeller design improves pump efficiency over the baseline smooth and existing rectangular microgroove impeller designs.
IRJET- Off-Axis Motor Overdrive Ducted FanIRJET Journal
1. The document describes the design of an off-axis motor overdrive ducted fan for unmanned aerial vehicles. It aims to improve thrust by reducing flow separation and increasing the axial velocity component using an off-axis motor placement with an overdrive transmission.
2. Finite element analysis and computational fluid dynamics simulations are used to compare a conventional on-axis ducted fan design to an off-axis version in terms of thrust, drag, power, and efficiency.
3. The off-axis design uses a lower kV brushless motor placed off the fan axis connected to the fan via a bevel gear transmission housed in the duct. Modular 3D printed ducts are manufactured and tested in a wind
Abstract This Innovated model of Darrieus Straight bladed Vertical Axis Wind Turbine system is the construction of a Three-bladed rotor system with each modified turbine blades suited to withstand on different circumstances. The modified blades are thus adjusted in a manner of the air flow striking close enough on the rotor. This paper presents a mean for reducing the loss of air flow during the process of a vertical-axis wind turbine (VAWT) by modifying each blade. The model was designed in such a way that one part of the turbine has an additional semicircular plate attached on the direction of wind, while the second rotor has a alteration in this design with air deviating wing which proves to be efficient. This modification results in the maintaining the lift and drag force on wind-blades. The generator can be driven by this modified Darrieus SBVAWT system to produce electricity, especially for agricultural purposes. For this purpose, three dimensional CFD analyses have been performed on a straight-bladed Darrieus-type rotor. The Darrieus rotors have been designed using CATIA and the model was tested for computing mesh by CFD software for finding the various factor of the VAWT system. The performance was analyzed and a result of the Darrieus rotor was obtained, which shows that this model can purely withstand. The changes made in the design of the turbine blades have proved to be efficient. Keywords: VAWT, Straight blade, Air foil, Power coefficient.
Comparative Analysis of Mechanical Efficiency of Domestic Hawt without Nos...IRJET Journal
This document compares the mechanical efficiency of a domestic horizontal axis wind turbine (HAWT) without and with a nose cone. Testing was conducted by measuring the rotational speed and power output of the turbine at varying wind speeds. Without a nose cone, the average efficiency was 38.75%. With a nose cone, which provides streamlined airflow over the blades to reduce drag, the average efficiency increased to 40.38%. The nose cone improved the value of the Betz limit, which describes the maximum power that can theoretically be extracted from the wind. In conclusion, the addition of a nose cone to reduce drag and increase lift improved the mechanical efficiency of the small HAWT design.
IRJET- CFD Analysis of Wind Turbine Blade for Low Wind SpeedIRJET Journal
This document summarizes a study that analyzed the aerodynamic performance of six-bladed wind turbine blades designed for low wind speeds using computational fluid dynamics (CFD). The study used ANSYS Fluent software to model the flow around blades designed with different airfoil profiles at a hub height wind speed of 3 m/s. The parameters analyzed included lift, drag, coefficient of lift and drag, and lift to drag ratio. The results were validated according to IEC wind turbine standards. The goal was to design blades that can optimize power production at low wind velocities for small-scale wind turbine applications.
Bird Impact Analysis of a Composite Wind Turbine BladeIRJET Journal
1) The document describes a study analyzing the impact of bird strikes on composite wind turbine blades through finite element modeling and simulation.
2) A 3D model of a wind turbine blade was created in SolidWorks and meshed in ABAQUS. Material properties were applied and a 2kg cylindrical impactor representing a bird was modeled to impact the rotating blade.
3) Explicit dynamic analysis was performed in ABAQUS to evaluate the structural response of the blade under the impact loading. Stresses, deflections, and energy absorption were examined to assess damage from the simulated bird strike.
Design of Naca63215 Airfoil for a Wind TurbineIOSR Journals
1. The document describes the design of an airfoil and winglet for a wind turbine blade to improve efficiency and reduce noise. NACA 63-215 airfoil profile is selected for analysis.
2. The blade is modeled in Pro/E and Hypermesh software. Sections are created along the blade length with variations to the standard design. A winglet is proposed to be added to the blade tip to further increase efficiency and reduce noise during operation.
3. The existing blade design and a modified design with a winglet added to the tip are compared using computational fluid dynamics to analyze the results.
DESIGN AND ANALYSIS OF HELICOPTER MAIN ROTOR HEADIRJET Journal
This document describes the design and analysis of a helicopter main rotor head. It begins with an abstract that outlines the objectives of modeling and analyzing a helicopter rotor head in SOLIDWORKS and ANSYS software. The introduction provides background on the main components of a helicopter rotor system. The methodology section then details the steps taken, which included designing the rotor head in SOLIDWORKS based on calculations, performing structural and modal analyses in ANSYS, and evaluating different materials. Dimensions of the rotor head are also presented. The document analyzes the rotor head to evaluate stresses, natural frequencies, and fatigue life.
HAWT Parametric Study and Optimization PPTGAURAV KAPOOR
This document discusses exploring a computational fluid dynamics (CFD) integrated design methodology for application to wind turbine blades. It first summarizes background on increasing global energy needs and the growth of wind energy. It then outlines CFD analysis performed on airfoil sections and a full turbine blade to validate simulation results against experimental data. A parametric correlation study identifies the most sensitive design parameters for blade geometry. Finally, a response surface optimization approach is employed to optimize the blade design for maximum power output. The optimized design is then validated using CFD simulations showing an improvement in power output over the original blade design.
Analysis of Newly Designed Airfoil for Micro-Capacity Wind Turbine using Qbla...IRJET Journal
This document discusses the analysis and design of airfoils for micro wind turbines using QBlade software. It analyzes two existing airfoils, NACA 2408 and SD 2030, and designs a new airfoil called AG 3307 for low Reynolds number applications. The key findings are that the newly designed AG 3307 airfoil produces a maximum power coefficient of 0.556 at 7 m/s wind speed, outperforming the existing airfoils. It has a maximum thickness of 7.96% and camber of 3.15%. The study aims to improve aerodynamic performance of airfoils for small wind turbines operating in low wind speed regions.
Design Calculation of 1200W Horizontal Axis Wind Turbine Blade for Rural Appl...ijtsrd
This document describes the design of a 1200W horizontal axis wind turbine blade for rural applications in Myanmar. The design process uses blade element theory to divide the blade into 10 equal elements, forming 11 sections. Design calculations are shown to determine the blade airfoil, chord length distribution, and pitch angle for each section. The goal is to produce 1200W of power at a wind speed of 7m/s. Specifications and calculations for the rotor diameter, tip speed ratio, chord length, incident angle, and pitch angle at each section are presented in tables. The results show the designed blade can efficiently extract kinetic energy from wind to generate electricity for rural applications.
IRJET- Design and Analysis of Highway Wind Power Generation using Vertical Ax...IRJET Journal
This document describes the design and analysis of a vertical axis wind turbine to harness wind energy from vehicles on highways. The turbine would be installed on highway medians to capture wind from both sides of passing vehicles. A computational model was developed to simulate and optimize the turbine design before physical fabrication. Various blade designs were analyzed, including straight, curved, airfoil, and twisted styles. The goals of the project were to generate electricity efficiently from the consistent highway winds and contribute to renewable energy production.
1) The document describes a proposed Maglev Wind Turbine Generator (MWTG) that uses magnetic levitation and vertical axis wind turbines to generate electricity from wind power more efficiently than traditional horizontal axis wind turbines.
2) The MWTG aims to provide a renewable energy alternative to fossil fuels by taking advantage of lower wind speeds using vertical axis turbines and reducing noise, maintenance needs, and land usage through magnetic levitation of components.
3) The proposed design of the MWTG includes 10 acrylic blades attached to a hollow aluminum shaft that spins magnets near coils to generate electricity through the principles of electromagnetic induction, with the goal of increasing overall energy production from wind in a more efficient manner.
To study Magnus Effect on Flettner RotorIRJET Journal
This document discusses using computational fluid dynamics (CFD) software to simulate the Magnus effect on Flettner rotors. It first provides background on Flettner rotors and the Magnus effect. It then describes the methodology, which includes analyzing experimental data on rotating cylinders, establishing relationships between parameters, setting boundary conditions in CFD, running simulations, and validating the results. The simulations model the fluid flow around stationary and rotating cylinders and calculate lift and drag coefficients. The CFD analysis is found to capture the Magnus effect and related fluid phenomena on the rotating cylinders.
Similar to Performance Analysis of Giromill Vertical Axis Wind Turbine with NACA 63618 Airfoil (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
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
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.