Large Eddy Simulation of Vehicle Aerodynamics Using Parallel Computational Fluids Dynamics
Large eddy simulation (LES) is used to study the flow around a simplified car model. The model consists of one bluff body slanted at the back-end. The LES was made at the Reynolds number of 0.51 × 106 based on the height of the rear model and the inlet air velocity. Four variants of the model were studied, one where the simulation was conducted with a single processor until combined all four processors to compute. The results of the LES simulations were used to analyze the flow field around the body and the back-end. Large vortical structures around the front box and in the gap were identified. The flow field analysis showed how these large vortical structures are responsible for the difference in the accuracy of drag force for the model that arises when the number of processors increase from one to eight processors along with different decomposing techniques.
KeywordsLarge eddy simulations Parallel CFD Aerodynamics
Firstly, I am grateful to the Almighty God for the good health that is important in keeping me completing this technical paper. Next I would like to thank my supervisor, Dr. Muhamad Husaini for being a great mentor in giving guidance throughout the project duration. I take this opportunity to thank all the department faculty members for their help and support in any way. Thanks to my parents and family as well for their never ending encouragement and support. I also place on record, my sense of gratitude to one and all, which directly or indirectly, have lend their hand in this venture.
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