Simulation Design with CFD and FEA
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A collection of my simulation work throughout my college career, using ANSYS Fluent for Computational Fluid Dynamics and ABAQUS for Finite Element Analysis.
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The document summarizes previous research on mixed convection heat transfer in inclined tubes and describes an experimental study. The study investigated the effects of heat flux, tube inclination angles, and tube diameters on heat transfer for laminar to turbulent air flows in inclined circular tubes under constant wall heat flux. Local and average Nusselt numbers were measured for tube inclinations of 30°, 45°, and 60° and diameters of 0.75, 1.5, and 2 inches. The results showed that Nusselt numbers increased with higher heat flux and as the tube moved from 60° to 30° inclination, and decreased with larger diameter to length ratios.
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ABSTRACT:
Vortex tubes are simple and common devices which separates a high-pressure gas flow as two different lower gas flows. One of the outlets has a higher temperature than the inlet high pressure gas and other outlet has lower. Most common types of the vortex tubes are counter and parallel flow types. In counter flow type vortex tubes the cold and hot outlets are on opposite sides and in parallel flow type both the outlets are on the same side. Since it is a simple, well known, compact, portable, highly reliable and has a few initial costs, it could be desirable for the specific heating or cooling and refrigeration applications.
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This document describes a study of gravity-driven film flow along an inclined wall where the physical properties (density, viscosity, thermal conductivity, specific heat) vary with temperature. The study uses similarity transformations to solve the boundary value problem of the governing equations for water, air, and engine oil. Results are presented showing the effect of variable physical properties on flow and heat transfer for a water film with inlet temperatures of 20°C and 60°C.
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In this work, we visualize the effect of varying wall temperature on the heat transfer by supplying the heat at
three different positions to the vertical annular cylinder embedded with porous medium. Finite element method
has been used to solve the governing equations. Influence of Aspect ratio 𝐴𝑟 , Radius ratio 𝑅𝑟 on Nusselt
number 𝑁 𝑢 is presented. The effect of power law exponent effect for different values of Rayleigh number is
discussed. The fluid flow and heat transfer is presented in terms of streamlines and isotherms.
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The document summarizes previous research on mixed convection heat transfer in inclined tubes and describes an experimental study. The study investigated the effects of heat flux, tube inclination angles, and tube diameters on heat transfer for laminar to turbulent air flows in inclined circular tubes under constant wall heat flux. Local and average Nusselt numbers were measured for tube inclinations of 30°, 45°, and 60° and diameters of 0.75, 1.5, and 2 inches. The results showed that Nusselt numbers increased with higher heat flux and as the tube moved from 60° to 30° inclination, and decreased with larger diameter to length ratios.
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DATE: 2019.05
- Computational analysis of a vortex tube
- Developing boundary conditions for heat transfer analysis
- CAD by creating a suitable model for heat transfer analysis
- CFD analysis by using ANSYS FLUENT
- Literature survey for recent academic studies
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Vortex tubes are simple and common devices which separates a high-pressure gas flow as two different lower gas flows. One of the outlets has a higher temperature than the inlet high pressure gas and other outlet has lower. Most common types of the vortex tubes are counter and parallel flow types. In counter flow type vortex tubes the cold and hot outlets are on opposite sides and in parallel flow type both the outlets are on the same side. Since it is a simple, well known, compact, portable, highly reliable and has a few initial costs, it could be desirable for the specific heating or cooling and refrigeration applications.
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Experimental study of the structure of a thermal plume inside a rectangular t...
The objective of this work is to experimentally simulate a plume developing inside a horizontal
tunnel. The experimental device used in this simulation is essentially constituted of a hot disk, a rectangular
tunnel and a ventilation system. The hot disk is heated by Joule effect to a constant and uniform temperature,
and placed inside the tunnel. The hot source generates a thermal plume. We first studied the evolution of the
thermal plume without ventilation system. The study of the average and fluctuating thermal and dynamic fields
shows three zones during the vertical evolution of the free plume. A first zone close to the source, serving to the
plume supply in fresh air, is characterized by the apparition of three escapes of the thermal plume. Followed by
a second zone where the main escape undergoes a contraction. Finally, a third zone where the thermal plume
accumulates and undergoes a flow upstream named backlayering and a flow downstream that borders the
ceiling to leave by the free part of the tunnel.
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This document describes a simulation method for optimizing the cooling water slot structure in continuous casting molds. It involves using ANSYS software to simulate the temperature field in a 3D mold model combined with a submerged entry nozzle to determine the maximum heat flux density on the mold copper plate. This heat flux value is then applied to a copper plate element model to simulate thermal stresses and strains. Different water slot structure plans are analyzed to identify the most reasonable design based on temperatures, deformations and stresses. The goal is to confirm design factors that reduce thermal stresses on the mold copper plate during continuous casting.
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This document discusses mechanical properties of materials as determined through tensile testing. It describes three main regions in a stress-strain curve: the elastic region where deformation is recoverable, the plastic region where permanent deformation occurs, and the failure point where the material fractures. Key properties like elastic modulus, yield strength, tensile strength, and ductility can be determined from the stress-strain curve generated through tensile testing, where a material sample is stretched until failure. The properties influence a material's behavior under mechanical loads and are important considerations for engineering design and manufacturing.
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This document discusses research into the temperature-induced curling behavior of prestressed concrete railroad crossties. Through finite element modeling and laboratory/field experimentation, the researchers found that:
1) Concrete crossties experience curl (warping) due to temperature gradients across their depth, with positive gradients causing upward curl and negative gradients causing downward curl.
2) The amount of curl is directly related to the magnitude of the temperature gradient, with gradients of up to 30°F observed to cause curl of up to 10 mils.
3) Field testing revealed that temperature-induced curling can significantly change the center bending moments experienced by crossties under load, with moments varying by up to 50% due to
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1) A computational fluid dynamics (CFD) analysis was performed on a double pass, foldable and portable solar air heater to analyze parameters like outlet air temperature, velocity, and absorber plate temperatures.
2) The CFD model was created in ANSYS Fluent and the RNG k-ε turbulence model with discrete transfer radiation model was used. Material properties were defined and boundary conditions were applied based on experimental conditions.
3) Simulation results from 1-5pm showed a maximum outlet temperature of 56.08°C at 2pm and maximum temperature rise of 16.25°C at 3pm, with outlet velocities around 1.2 m/s. Results agreed well with experimental values.
International Journal of Computational Engineering Research(IJCER)
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
As4101256260
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Ijetr021242
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
30120130406018 2-3
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1) Heat transfer rates decrease when accounting for decreasing thermal conductivity with increasing temperature but are unaffected by variable viscosity.
2) Variable density has a significant impact on results and invalidates the constant density assumption for some cases.
3) Constant property assumptions are better for higher Rayleigh numbers.
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IJSRED-V2I3P61
1) The document presents a computational study to determine heat transfer coefficients and friction factors for turbulent air flow through rectangular ducts with triangular ribs.
2) A commercial software package was used to simulate the flow and analyze heat transfer across the ribbed duct. The duct walls were modeled with and without ribs to compare heat transfer and pressure drop.
3) Results are presented in dimensionless form as Nusselt numbers and friction factors as functions of Reynolds number. It was found that the ribs increased both heat transfer and pressure drop compared to a smooth duct.
Computational Investigation on Thermo-Hydraulic Performance Characteristics o...
1. A computational study was conducted to analyze the thermo-hydraulic performance of a ribbed passage with circular ribs.
2. The study used computational fluid dynamics (CFD) to determine heat transfer coefficients and friction factors for turbulent air flow through a rectangular duct with circular rib roughness.
3. The results show that ribs increase both heat transfer and pressure drop compared to a smooth duct. Heat transfer, as measured by Nusselt number, increases with Reynolds number and relative roughness height, while turbulence intensity is highest between ribs close to the main flow.
Bv35420424
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.
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This document provides details about a course work project on solar air heaters. It includes:
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- A literature review summarizing previous studies on enhancing heat transfer using different absorber plate geometries.
- The identification of a research gap in three-sided artificial roughening of absorber plates to further increase efficiency.
- The objectives of experimentally comparing the heat transfer and pressure drop of one-sided and three-sided roughened absorber plates.
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tunnel and a ventilation system. The hot disk is heated by Joule effect to a constant and uniform temperature,
and placed inside the tunnel. The hot source generates a thermal plume. We first studied the evolution of the
thermal plume without ventilation system. The study of the average and fluctuating thermal and dynamic fields
shows three zones during the vertical evolution of the free plume. A first zone close to the source, serving to the
plume supply in fresh air, is characterized by the apparition of three escapes of the thermal plume. Followed by
a second zone where the main escape undergoes a contraction. Finally, a third zone where the thermal plume
accumulates and undergoes a flow upstream named backlayering and a flow downstream that borders the
ceiling to leave by the free part of the tunnel.
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1) Concrete crossties experience curl (warping) due to temperature gradients across their depth, with positive gradients causing upward curl and negative gradients causing downward curl.
2) The amount of curl is directly related to the magnitude of the temperature gradient, with gradients of up to 30°F observed to cause curl of up to 10 mils.
3) Field testing revealed that temperature-induced curling can significantly change the center bending moments experienced by crossties under load, with moments varying by up to 50% due to
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2) The CFD model was created in ANSYS Fluent and the RNG k-ε turbulence model with discrete transfer radiation model was used. Material properties were defined and boundary conditions were applied based on experimental conditions.
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International Journal of Computational Engineering Research(IJCER)
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
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International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Ijetr021242
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
30120130406018 2-3
This document summarizes a numerical study of two-dimensional natural convection in a square enclosure with differentially heated walls. The study evaluates the effects of variable properties of air, including density, thermal conductivity, and viscosity, on heat transfer rates and flow patterns using a finite volume method. Key findings include:
1) Heat transfer rates decrease when accounting for decreasing thermal conductivity with increasing temperature but are unaffected by variable viscosity.
2) Variable density has a significant impact on results and invalidates the constant density assumption for some cases.
3) Constant property assumptions are better for higher Rayleigh numbers.
4) Heat transfer increases with the addition of slip boundary conditions, especially at higher Rayleigh numbers.
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IJSRED-V2I3P61
1) The document presents a computational study to determine heat transfer coefficients and friction factors for turbulent air flow through rectangular ducts with triangular ribs.
2) A commercial software package was used to simulate the flow and analyze heat transfer across the ribbed duct. The duct walls were modeled with and without ribs to compare heat transfer and pressure drop.
3) Results are presented in dimensionless form as Nusselt numbers and friction factors as functions of Reynolds number. It was found that the ribs increased both heat transfer and pressure drop compared to a smooth duct.
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1. A computational study was conducted to analyze the thermo-hydraulic performance of a ribbed passage with circular ribs.
2. The study used computational fluid dynamics (CFD) to determine heat transfer coefficients and friction factors for turbulent air flow through a rectangular duct with circular rib roughness.
3. The results show that ribs increase both heat transfer and pressure drop compared to a smooth duct. Heat transfer, as measured by Nusselt number, increases with Reynolds number and relative roughness height, while turbulence intensity is highest between ribs close to the main flow.
Bv35420424
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.
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2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
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Findings: Based on findings, the Gumbel approach produced the highest intensity values, whereas the other approaches produced values that were close to each other. The data indicates that 461.9 mm of rain fell during the monsoon season’s 301st week. However, it was found that the 29th week had the greatest average rainfall, 92.6 mm. With 952.6 mm on average, the monsoon season saw the highest rainfall. Calculations revealed that the yearly rainfall averaged 1171.1 mm. Using Weibull’s method, the study was subsequently expanded to examine rainfall distribution at different recurrence intervals of 2, 5, 10, and 25 years. Rainfall and recurrence interval mathematical correlations were also developed. Further regression analysis revealed that short wave irrigation, wind direction, wind speed, pressure, relative humidity, and temperature all had a substantial influence on rainfall.
Originality and value: The results of the rainfall IDF curves can provide useful information to policymakers in making appropriate decisions in managing and minimizing floods in the study area.
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Simulation Design with CFD and FEA
- 1. Computational Fluid Dynamics (CFD) and Mechanical Finite Element Analysis (FEA)
- 2. Performed a study on laminar and turbulent flow within a circular pipe Analyzed the wall shear stress and compared velocity profiles
- 3. Simulated an airfoil at three different angles of attack - 0°, 13°, and 30° Compared drag and lift coefficients
- 4. Performed a flow simulation of a cylindrical rod in two different Reynold’s number flow – Re = 1 & Re = 500 Observed wall shear stress along the entire surface of the rod.
- 5. Analyzed displacements and forces in various truss structures
- 6. Calculated maximum allowable stresses in parts with various stress concentrations
- 7. Created a model with three different materials Analyzed which material would break first
- 8. Performed a computational study of a projectile punching through a solid plate
- 9. Observed heat flux magnitudes within different materials when both are subjected to the same outside temperature gradient