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Precise measurement technique for the stable acoustic cavitation bubble
作者姓名:HUANG  Wei  CHEN  Weizhong  LIU  Yanan  GAO  Xianxian  JIANG  Li'an  XU  Junfeng  ZHU  Yifei
作者单位:State Key Laboratory of Modem Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China
基金项目:This work was partly supported by the National Natural Science Foundation of China (Grant Nos. 10434070 and 10174036).
摘    要:Based on the periodic oscillation of the stable acoustic cavitation bubble, we present a precise measurement technique for the bubble evolution. This technique comprises the lighting engineering of pulsing laser beam whose phase can be digitally shifted, and the long distance microphotographics. We used a laser, an acousto-optic modulator, a pulse generator, and a long distance microscope. The evolution of a levitated bubble can be directly shown by a series of bubble's images at different phases. Numerical simulation in the framework of the Rayleigh-Plesset bubble dynamics well supported the experimental result, and the ambient radius of the bubble, an important parameter related to the mass of the gas inside the bubble, was obtained at the same time.

关 键 词:气穴现象  数字相位转移  显微镜图象  周期振动  脉冲激光技术
收稿时间:2005-05-23
修稿时间:2005-05-232005-07-13

Precise measurement technique for the stable acoustic cavitation bubble
Wei Huang,Weizhong Chen,Yanan Liu,Xianxian Gao,Li’an Jiang,Junfeng Xu,Yifei Zhu.Precise measurement technique for the stable acoustic cavitation bubble[J].Chinese Science Bulletin,2005,50(21):2417-2421.
Authors:Wei Huang  Weizhong Chen  Yanan Liu  Xianxian Gao  Li’an Jiang  Junfeng Xu  Yifei Zhu
Institution:1. State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, 210093, Nanjing, China
Abstract:Based on the periodic oscillation of the stable acoustic cavitation bubble, we present a precise measurement technique for the bubble evolution. This technique comprises the lighting engineering of pulsing laser beam whose phase can be digitally shifted, and the long distance microphotographics. We used a laser, an acousto-optic modulator, a pulse generator, and a long distance microscope. The evolution of a levitated bubble can be directly shown by a series of bubble’s images at different phases. Numerical simulation in the framework of the Rayleigh-Plesset bubble dynamics well supported the experimental result, and the ambient radius of the bubble, an important parameter related to the mass of the gas inside the bubble, was obtained at the same time.
Keywords:cavitation bubble  digital phase-shift  microscope imaging  radius evolution curve
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