An Experimental Investigation of Automobile Interior Wind Noise Using a Production Vehicle
Based on the analysis of automobile aerodynamic noise generation mechanisms and the components of interior wind noise, the spectra characteristics and spatial distribution rule of sound level of interior wind noise were investigated at first, then the frequency characteristics and noise level under different wind speeds, different yaw angles in SAWTC full-scale aeroacoustic wind tunnel were studied. The results show that: the interior noise level was nearly symmetric on vehicle left and right side, noise level of outboard ear was normally higher than that of inboard ear. The frequency characteristics under different wind speeds were almost the same, the linear OASPL of interior noise increased at about 4.4th power and A-weighted OASPL at about 5.5th power of wind speed. In addition, the acoustic power increased as yaw angle rose up, and noise level by leeward side was normally higher than that by windward under the same yaw angle.
Interior wind noise Wind tunnel test Spatial distribution Wind speed Yaw angle
Yin Zhi He Zhi Gang Yang Yi Gang Wang
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai, 201804, P.R. China
国际会议
上海
英文
1860-1866
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）