| 关于桑塔纳轿车后视镜产生的车外气流辐射声的研究 |
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| 引用本文： | 宫镇. 关于桑塔纳轿车后视镜产生的车外气流辐射声的研究[J]. 汽车工程, 1995, 17(6): 379-383 |
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| 作者姓名： | 宫镇 |
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| 作者单位： | 江苏理工大学(葛芚)，江苏理工大学(宫镇) |
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| 摘 要： | 本文根据Ｌｉｇｈｔｈｉｌｌ的声模拟理论推导了轿车高速行驶时产生的外部气流辐射声的计算方法。通过风洞试验研究了桑塔纳轿车后视镜产生的脉动压力场的分布情况，测出在相当于９０ｋｍ／ｈ的车速下，作用在车身表面的脉动压力级最大处达１３２．５ｄＢ。最后，用本文导出的计算方法求出了当车年为１４６ｍｇ／ｈ时，单由后视镜产生的距轿车中心７．５ｍ处的外部气流辐射声即已超过６０ｄＢ。
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| 关 键 词： | 气流噪声 汽车 轿车 后视镜 |
Study on Externally Radiated Aerodynamic Noise Caused by Side Mirror of a Santana, Sedan |
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| Ge Tun , Gong Zhen. Study on Externally Radiated Aerodynamic Noise Caused by Side Mirror of a Santana, Sedan[J]. Automotive Engineering, 1995, 17(6): 379-383 |
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| Authors: | Ge Tun & Gong Zhen |
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| Affiliation: | Ge Tun & Gong Zhen |
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| Abstract: | This paper derived a formula for calculating the externally radiated aerodynamic noise caused by a car according to Lighthill' s theory. Then the fluctuation pressure field produced by the side mirror of a Santana car was studied in wind tunnel experiments. The highest fluctuation pressure level had reached 132.5dB on the surface of the car body at a speed of 90 km/h.Finally the aerodynamic noise caused by the side mirror alone at the distance of 7.5m from the car was calculated by derived formula and was over 60 dB at a speed of 146 km/h. |
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| Keywords: | Aerodynamic noise Automobile |
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