Bai Lixin, Xu Weilin, Deng Jingjun, Li Chao, Xu Delong, Gao Yandong
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
Sichuan University, Chengdu 610065, China.
Ultrason Sonochem. 2014 Sep;21(5):1696-706. doi: 10.1016/j.ultsonch.2014.02.027. Epub 2014 Mar 6.
The generation and control of acoustic cavitation structure are a prerequisite for application of cavitation in the field of ultrasonic sonochemistry and ultrasonic cleaning. The generation and control of several typical acoustic cavitation structures (conical bubble structure, smoker, acoustic Lichtenberg figure, tailing bubble structure, jet-induced bubble structures) in a 20-50 kHz ultrasonic field are investigated. Cavitation bubbles tend to move along the direction of pressure drop in the region in front of radiating surface, which are the premise and the foundation of some strong acoustic cavitation structure formation. The nuclei source of above-mentioned acoustic cavitation structures is analyzed. The relationship and mutual transformation of these acoustic cavitation structures are discussed.
声空化结构的产生与控制是超声声化学和超声清洗领域中空化应用的前提条件。研究了20 - 50 kHz超声场中几种典型声空化结构（锥形气泡结构、“冒烟者”、声李廷博花纹、拖尾气泡结构、射流诱导气泡结构）的产生与控制。空化气泡倾向于沿辐射表面前方区域的压降方向移动，这是一些强声空化结构形成的前提和基础。分析了上述声空化结构的核源。讨论了这些声空化结构之间的关系和相互转化。
