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。
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.
出处
《激光技术》
CAS
CSCD
北大核心
2007年第3期281-284,329,共5页
Laser Technology
基金
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)
关键词
激光技术
激光泡声波
声谱特性
压电陶瓷水听器
laser technique
laser-induced cavitation bubble collapse sound waves
property of spectrum
piezoelectric transducer hydrophone
