Evaluation of Aerodynamics and Pressure Gradient Distribution Around a Moving Vehicle

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Periodicity:January - March'2025

Abstract

Electric vehicles are on the verge of dominating the market due to their sustainability however, they are required to yield superior performance with long driving range, high stability, and overall cost. Further developments and optimizations are being applied to increase the performance parameters such as maximum acceleration, velocity, and driving range thereby taking advantage of the dynamic airflow energy. This study focusses on the analyses of the air pressure, velocity and force distribution of a moving car at high speeds thereby highlighting the possibility to tap into the potential energy to charge the vehicle battery. The front region of the vehicle is found to be exposed to the highest air pressure and velocity change translating to the loss of energy into other energy forms. Pressure drag is found to be a function of the pressure difference between the front and the back if a moving vehicle. Computational Fluid Dynamic (CFD) simulation techniques was used on a CAD model observing the areas of high and low pressure. Simulation results were coherent with the mathematical model results thereby validating this work. Solidworks flow analysis was used for the analysis of the meshed geometry and revealed how force, pressure distribution, and velocity fields for various car speeds.

Keywords

Aerodynamic drag wake pressure air streamlines Stagnation pressure k-ε turbulence model

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