The effect of the configuration of a single electrode corona discharge on its acoustic characteristics

Xinlei ZHU (朱鑫磊); Liancheng ZHANG (张连成); Yifan HUANG (黄逸凡); Jin WANG (王晋); Zhen LIU (刘振); Keping YAN (闫克平)

doi:10.1088/2058-6272/aa6716

Plasma Science and Technology > 2017 > 19(7): 75403-075403. > DOI: 10.1088/2058-6272/aa6716

Xinlei ZHU (朱鑫磊), Liancheng ZHANG (张连成), Yifan HUANG (黄逸凡), Jin WANG (王晋), Zhen LIU (刘振), Keping YAN (闫克平). The effect of the configuration of a single electrode corona discharge on its acoustic characteristics[J]. Plasma Science and Technology, 2017, 19(7): 75403-075403. DOI: 10.1088/2058-6272/aa6716

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The effect of the configuration of a single electrode corona discharge on its acoustic characteristics

1 Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, People’s Republic of China 2 Dalian Scientific Test and Control Technology Institute, Dalian 116013, People’s Republic of China

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Abstract

Abstract

A new sparker system based on pulsed spark discharge with a single electrode has already been utilized for oceanic seismic exploration. However, the electro-acoustic energy efficiency of this system is lower than that of arc discharge based systems. A simple electrode structure was investigated in order to improve the electro-acoustic energy efficiency of the spark discharge. Experiments were carried out on an experimental setup with discharge in water driven by a pulsed power source. The voltage–current waveform, acoustic signal and bubble oscillation were recorded when the relative position of the electrode varied. The electro-acoustic energy efficiency was also calculated. The load voltage had a saltation for the invaginated electrode tip, namely an obvious voltage remnant. The more the electrode tip was invaginated, the larger the pressure peaks and first period became. The results show that electrode recessing into the insulating layer is a simple and effective way to improve the electro-acoustic energy efficiency from 2% to about 4%.
- pulsed discharge in water,
- electro-acoustic efficiency,
- pulsed power,
- plasma sound source

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