高速车辆气动噪声研究

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1、硕士学位论文目录摘要......................................................................................................................IAbstract..................................................................................................................II第1章绪论............................

2、.............................................................................11.1本课题的背景及意义................................................................................11.2国内外研究概况........................................................................................21.3本文研究内容.......

3、.....................................................................................61.4本章小结...................................................................................................6第2章流体声学理论....................................................................................

4、........82.1流场中的声源............................................................................................82.2流体运动基本方程..................................................................................102.3Lighthill声波动方程...............................................................

5、.................122.4Lighthill－Curle方程...............................................................................142.5FfowcsWilliams－Hawkings方程............................................................152.6本章小结.....................................................................

6、............................16第3章车辆气动噪声的试验研究.......................................................................173.1试验目的.................................................................................................173.2试验设备........................................................

7、.........................................173.2.1数据采集系统................................................................................183.2.2传声器和前置放大器.....................................................................193.2.3加速度传感器....................................................