Electric characteristic and cavitation bubble dynamics using underwater pulsed discharge

被引：24
|
作者：
Shan, Minglei [1 ,2 ]
Chen, Bingyan [1 ]
Yao, Cheng [1 ,2 ]
Han, Qingbang [1 ,2 ]
Zhu, Changping [1 ,3 ]
Yang, Yu [1 ,2 ]
机构：
[1] Jiangsu Key Lab Power Transmiss & Distribut Equip, Changzhou 213022, Peoples R China
[2] Hohai Univ, Coll Internet Things Engn, Changzhou 213022, Peoples R China
[3] Wanjiang Univ Technol, Key Lab Unmanned Aerial Vehicle Dev & Data Applic, Maanshan 243031, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2019年 / 21卷 / 07期
基金：
中国国家自然科学基金;
关键词：
underwater pulsed discharge; cavitation bubble; electric discharge characteristic; high-speed camera; WATER; BREAKDOWN;
D O I：
10.1088/2058-6272/ab0b62
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Underwater pulsed discharge is widely applied in medicine, machining, and material modification. The induced cavitation bubble and subsequent cavitation collapse are considered the major motivations behind these applications. This paper presents an underwater pulsed discharge system. The experimental setup is established to induce and investigate the cavitation bubble assisted with a high-speed camera. Three aspects, including the characteristic of the discharge with different applied voltages and conductivities, the evolution of the cavitation bubble profile, and the energy efficiency of cavitation bubble inducing, are investigated, respectively. Especially, the mechanism of pre-discharge time delay in the low field intensity case is explained using the Joule heat effect. The results show the validity of the underwater pulsed discharger and experimental setup. The present underwater pulsed discharger is proved to be a simple, portable, and easy-to-implement device for the investigation of cavitation bubble dynamics.
引用
收藏
页数：7
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