激光空泡溃灭辐射声波声谱特性研究

基金项目:

国家自然科学基金资助项目(60578015);海军青年研究基金资助项目(2004)

详细信息

Spectrum properties of laser-induced cavitation bubble collapse sound waves

1.
College of Electronics Engineering, Naval University of Engineering, Wuhan 430033, China;
2.
Naval Command College, Nanjing 211800, China;
3.
Department of Applied Physics, Nanjing University of Science & Technology, Nanjing 210094, China

摘要: 为了对高功率激光与液体物质作用时产生的激光泡溃灭辐射声波的声谱特性进行实验研究,采用压电陶瓷水听器测量了不同情况下的激光泡溃灭声波,对采集的信号经过傅里叶变换后得到相应的声谱进行谱分析.结果表明,激光泡半径大小对应着不同的声波频率,泡半径大的,声波频率较低.这一结果对空化噪声的理论与应用研究是有帮助的.
- 激光技术 /
- 激光泡声波 /
- 声谱特性 /
- 压电陶瓷水听器
Abstract: The laser-induced cavitation bubble collapse sound waves during the high-power laser and matter interaction in liquid were experimentally investigated.Laser-induced cavitation bubble collapse sound waves at different conditions were measured with a piezoelectric transducer hydrophone in the experiments,and the signals of sound waves were analyzed based on fast Fourier transform.The investigation results showed the frequency varied with the radius of laser-generated bubble,i.e,the bigger the radius,and the lower the frequency.The results are valuable for theoretical and practical research in cavitation noise.
- laser technique /
- laser-induced cavitation bubble collapse sound waves /
- property of spectrum /
- piezoelectric transducer hydrophone

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