Influence of voltage polarity on intensity of shock waves induced by underwater pulse discharges

Gu Yue Zhou, Yi Liu, Xian Dong Li, Si Wei Liu, Zhi Yuan Li, Zi Jian Li, Fu Chang Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The shock wave generated by high-voltage pulse discharges in liquid has been widely used in industrial applications. In this paper, an integrated experimental platform of underwater pulse discharges is established, a needle-plate electrodes system with the gap distance of 10 mm is used. The influence of voltage polarity on the process, morphology and physical characteristics of streamer development are discussed, based on the analysis of energy transfer process, the influence of voltage polarity on the shock intensity is studied. The results show that for the subsonic streamer, the use of negative polarity voltage can significantly improve the energy conversion efficiency of the shock wave. For the positive polarity, the supersonic streamer mode can significantly reduce the energy loss of the prebreakdown process, increase the rate of expansion of the plasma channel, and obtain a higher intensity of shock wave. Using the negative polarity voltage, or controlling the voltage of the positive polarity to make streamers develop in the supersonic streamer mode, can significantly improve the intensity of the shock wave.

Original languageEnglish
Title of host publication2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)9781509048779
DOIs
Publication statusPublished - 2017 Nov 29
Externally publishedYes
Event19th IEEE International Conference on Dielectric Liquids, ICDL 2017 - Manchester, United Kingdom
Duration: 2017 Jun 252017 Jun 29

Publication series

Name2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
Volume2017-January

Conference

Conference19th IEEE International Conference on Dielectric Liquids, ICDL 2017
Country/TerritoryUnited Kingdom
CityManchester
Period17/6/2517/6/29

Keywords

  • Energy transfer
  • Polarity effect
  • Shock wave intensity
  • Streamer development
  • Underwater discharges

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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