Evaluation of Aerodynamic Noise Generated in a Miniature Car Using Numerical Simulation 2009-01-0478
Aerodynamic noise generated in a miniature car had been evaluated using numerical simulation. Large Eddy Simulation (LES) was applied to analyze the transient flow field and the Ffowcs Williams-Hawkings (FW-H) acoustic analogy was employed to conduct acoustic analysis. The time accurate flow data was obtained using a finite volume flow solver on an unstructured grid. The flow field around the rear view mirror was obtained by numerical for two cases with different side view mirrors. Moreover, the distribution of acoustic source was predicted on side windows, and the aerodynamic noise was lowed through optimizing the shape of the rear view mirror and some experiments were done to validate the effect. Present study ascertained the feasibility and applicability of finite volume method (FVM) with SGS model towards prediction of aerodynamic noise generated in production vehicle.
Citation: Zhengqi, G., Yiping, W., Weiping, L., and Yangxue, ., "Evaluation of Aerodynamic Noise Generated in a Miniature Car Using Numerical Simulation," SAE Int. J. Passeng. Cars – Mech. Syst. 2(1):693-702, 2009, https://doi.org/10.4271/2009-01-0478. Download Citation
Gu Zhengqi, Wang Yiping, Li Weiping, Yangxue
SAE World Congress & Exhibition
SAE International Journal of Passenger Cars - Mechanical Systems-V118-6EJ, SAE International Journal of Passenger Cars - Mechanical Systems-V118-6