The Influence of Water Characteristics on Plasma-Containing Bubble Dynamics
The Influence of Water Characteristics on Plasma-Containing Bubble Dynamics
复制标题
水特性对含等离子体气泡动力学的影响
DOI：
10.1109/tps.2015.2458979
复制
发表时间：
2015
影响因子：
1.5
通讯作者：
Yan Keping
中科院分区：
文献类型：
--
作者：
Huang Yifan;Zhang Liancheng;Yan Hui;Liu Zhen;Yan Keping
导电水中的脉冲放电可以产生含有等离子体的气泡，并辐射出强烈的声脉冲。气泡动力学对水温和环境压力非常敏感，它决定了声波的特性。本文给出了不同水温(18°C-80°C)和环境压力(0.1-1兆帕)下含等离子体气泡行为的高速记录。结果表明，水温越高，气泡越大，振荡周期越长，气泡能量转化效率越高。由于初始水温的升高降低了预放电期的能耗，气泡能量和能量效率随着水温的升高而快速增加。环境压力对最大气泡半径和振荡周期也有明显影响。随着环境压力的增加，这两个参数都迅速减小。但是，气泡能量和能量效率对环境压力不是很敏感，表明环境压力对脉冲放电的参数影响不大。
Pulsed discharge in conductive water can produce a plasma-containing bubble and radiate intensive acoustic pulses. The bubble dynamics, which determines the characteristics of the acoustic wave, is sensitive to the water temperature and ambient pressure. This paper presents the high-speed records of plasma-containing bubble behavior under different water temperatures in the range 18 °C-80 °C and ambient pressure in the range 0.1-1 MPa. The results show that a higher water temperature generates a larger bubble, larger oscillation period, and higher efficiency of the conversion of electric energy into bubble energy. The bubble energy and energy efficiency increase fast with water temperature since the rise in the initial water temperature decreases the energy consumption during the predischarge period. The ambient pressure also has an obvious effect on the maximum bubble radius and oscillation period. Both of them decrease fast when the ambient pressure increases. But, the bubble energy and energy efficiency are not so sensitive to ambient pressure, which indicates that the ambient pressure has little influence on the parameters of pulsed discharge.