| 用边界元法计算高速车辆内部气流噪声 |
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| 引用本文： | 夏恒,宫镇,陆森林.用边界元法计算高速车辆内部气流噪声[J].江苏大学学报(自然科学版),2003,24(1):47-50. |
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| 作者姓名： | 夏恒 宫镇 陆森林 |
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| 作者单位： | 1. 一汽无锡柴油机厂研究开发部,江苏,无锡,214026
2. 江苏大学汽车与交通工程学院,江苏,镇江,212013 |
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| 基金项目： | 国家自然科学基金资助项目 (5 9775 0 2 2 ) |
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| 摘 要： | 车内噪声严重影响了车辆乘坐的舒适性，同时由于气流噪声随车速的六次方增长，故随着高速公路的不断新建以及车速的不断提高，研究和降低气流噪声巳成为控制高速车辆车内噪声的关键之一，笔者在风洞实验的基础上，首先分析了气流噪声向车内传播的基本途径；然后利用边界元理论（BEM），建立了车内声场的边界积分方程，并利用三角线性元对该边界积分方程进行了离散，最后通过MATLAB编程求解，对由车外脉动压力诱发产生的车内气流噪声的大小进行了理论计算，与风洞实验结果相比，吻合较好。
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| 关 键 词： | 计算 高速车辆 边界元法 车内噪声 |
| 文章编号： | 1671-7775(2003)01-0047-04 |
| 修稿时间： | 2002年7月18日 |
Calculations about Interior Aerodynamic Noise for High-Speed Automobile by BEM |
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| XIA Heng ,GONG Zhen ,LU Sen lin.Calculations about Interior Aerodynamic Noise for High-Speed Automobile by BEM[J].Journal of Jiangsu University:Natural Science Edition,2003,24(1):47-50. |
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| Authors: | XIA Heng GONG Zhen LU Sen lin |
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| Institution: | XIA Heng 1,GONG Zhen 2,LU Sen lin 2 |
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| Abstract: | Aerodynamic noise of high speed automobile is a new problem emerged with the development of modern technology. In this paper, on the basis of the wind tunnel experiments and theoretical analysis, the transmitting path of external aerodynamic noise towards the cab is discussed. Using boundary element method (BEM), the interior aerodynamic noise induced by exterior fluctuating pressure of high speed automobile is calculated. From the result of wind tunnel experiments, it is found that the measured and calculated results are in good agreement for both the total sound pressure levels and the sound pressure levels in any frequency band. |
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| Keywords: | automobile aerodynamic noise boundary element method |
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