Date of Publication :7th April 2017
Abstract: As the manufacturers of the motor vehicles generally use their own wind tunnels to test the real vehicle's performances, especially in the final stage of vehicle design, though the development of prototype starts from defining external aerodynamics of the vehicle model using experimental research and numerical simulation. Today, there are a number of different commercial software designed for the numerical simulation of the external aerodynamics, that show the different air flow images around and especially behind the vehicle depending on the different turbulence models. Therefore, the improvement of prototype implies the testing of the vehicle model in the wind tunnel in order to reach the optimal numerical model for the air flow simulation around the vehicle. This paper presents the results of the numerical simulations of the air flow around the vehicle model compared to the experimental results. The results obtained by numerical simulations and experimental research, enable an analysis appointing the existing problems and appropriate numerical methods considering improvement of the vehicle aerodynamics based on the development of the vehicle model.
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