会议专题

The Flow and Aerodynamic Noise Calculation of A Generic Side Mirror

The flow and aerodynamic noise of a generic side mirror in high-speed is evaluated using numerical simulation and experiment. The Reynolds number mber is Re5.2105 basing on the mirror diameter. Transient flow field is analyzed by Large Eddy Simulation (LES), two different sub-grid scale (SGS) models named Smagorinsky-Lilly (SL) and Wall-Adapting Local Eddy-viscosity (WALE) are used to express the turbulent viscosity. Detailed velocity vectors and pressure fluctuation contours are compared by cut planes in the flowfield. Mean and transient pressure are also monitored at several points in the flow field and compared with corresponding experimental data. The sound propagation is predicted by the Ffowcs Williams-Hawkings (FW-H) acoustic analogy where wall pressure fluctuations and pressure temporal are treated as two source terms. The conclusion is that the SL model is a better candidate for this mirror simulation.

Aerodynamic Noise Numerical Simulation LES SGS FW-H Acoustic Analogy

Lin Xiaohui Wang Yiping Chen Zhifu Dong Guangping Gu Zhengqi

The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University Cha Hunan University of Technology Xiangtan, China411300

国际会议

2010 IEEE 11th International Conference on Computer-Aided Industrial Design & Conceptual Design(2010年第11届国际计算机辅助工业设计与概念设计学术会议)

浙江义乌

英文

1278-1283

2010-11-17(万方平台首次上网日期,不代表论文的发表时间)