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Training | Courses | CFD Analysis | DACFD | Mini Projects

 
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Verification and Validation in CFD

In this project, investigation has been done on different Verification and Validation methods in CFD. Various parameters like size of domain, iterative convergence, grid convergence and confidence interval for verification and validation of CFD results were studied by using an aerodynamic model as a test case

Verification and Validation in CFD

 

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Flow Over Generic Car Model (Ahmed Body)

Simulation of flow over the Ahmed body was done to understand the flow process involved in drag production. Through understanding the mechanism involved in generating drag, one should be able to design a car to minimize drag and therefore the minimize fuel consumption and maximize performance. The project involved the creation of a generic car model (Ahmed Body) using pre-the processing tool (GAMBIT) and surface mesh was  created using the same. Mesh refining, prism layer creation and volume meshing was done in T-Grid. Fluent 6.2.16 has used as the solver.

Ahmed Boday : Modeling and Simulation in CFD

Ahemad Boday : Modeling and Simulation using CFD

 

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Onera M6 Wing As Validation Test Case For CFD

The standard validation case for transonic flow regime is studied in this project. A parametric definition of ONERA M6 wing was used. A journal file was created using C-Programming and utilized in GAMBIT for the creating geometry and surface mesh. Volume mesh creation and refinement was done using T-Grid. The solution obtained by Fluent solver is used for comparing different parameters like coefficient of drag and lift with the available experimental values.

ONERA M6 Wing : Modeling and Simulation using CFD

ONERA M6 Wing : Modeling and Simulation using CFD

 

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Lid Driven Cavity (LDC)

Lid driven cavity is standard test case which is followed by CFD programmers for validating their code. The lid driven cavity flow was simulated using GAMBIT and Tgrid as the preprocessing tools and Fluent as the solver.

Lid Driven Cavity : Modeling and Simulation using CFD

Lid Driven Cavity : Modeling and Simulation using CFD

Lid Driven Cavity : Modeling and Simulation using CFD

 

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Laminar and Turbulent flow over flat plate

Flow over a flat plate gives the idea of the viscous effects and convective heat transfer of the fluid flow over a surface. Fluid flow and heat transfer parameters like coefficient of drag, heat transfer coefficient etc. are calculated for both laminar and turbulent flow. Structured grid generation software GridZ was used for mesh creation and Fluent was used for solving Navier Stokes Equation along with energy equation. This data was compared with the empirical correlations.

Laminar and Turbulent Flow Over Flat Plate : Modeling and Simulation using CFD

Laminar and Turbulent Flow Over Flat Plate : Modeling and Simulation using CFD

Laminar and Turbulent Flow Over Flat Plate : Modeling and Simulation using CFD

Boundary Layer Flow Over Flat Plate : Modeling and Simulation using CFD

Laminar and Turbulent Flow Over Flat Plate : Modeling and Simulation using CFD

 

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CFD Modeling and Analysis of Vortex Tube

CFD analysis was conducted towards optimization of the critical parameters of a vortex tube such as aspect ratio and cold end diameter to obtain maximum temperature drop (sub-zero temperature). GAMBIT was used for modeling and meshing of vortex tube. FLUENT was used for the analysis purpose.

Vortex Tube : Modeling and Simulation using CFD

 

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Code Development for 2D Lid Driven Cavity flow Simulation

2D unsteady incompressible flow was considered for simulation. The governing equations were Non-Dimensionalised and Stream function-Vorticity formulation was made. Successive Over-relaxation Method (SOR) was used for solving the partial differential equations. Gnuplot was used for post-processing purposes and the code was written in C language.

Code Development for 2D Lid Driven Cavity : Modeling and Simulation using CFD

Code Development for 2D Lid Driven Cavity : Modeling and Simulation using CFD

 

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Simulation of rotating flows driven by axisymmetric agitators in rotating cylinder

The basic intention behind this mini project work was to analyze the flow behavior, when it is agitated by Rotating axisymmetric agitators (rotating in clockwise direction). The cylinder containing fluid is rotating in anticlockwise direction. The analysis was carried out on FLUENT and CFX.

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