Influence of plasma channel impedance model on electrohydraulic shockwave simulation

Si Wei Liu, Yi Liu, Yi Jia Ren, Fu Chang Lin, Yang Liu, Yin Kuo Shen

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The simulation of electrohydraulic shockwaves is the key technology for their application and device design. The analytical approach of underwater pulsed discharge is described using the dimensionless analysis method, which combines energy based hydrodynamic equations and the electrical differential equation describing the discharge characteristics of the circuit. A constant plasma channel impedance model based on the experimental results and an improved time-varying plasma channel impedance model based on the Braginskii equation are proposed and presented. The plasma channel impedance has a great influence on the deposited energy into the plasma channel and then affects the calculation and analysis of the shockwave propagation. The electrical characteristics and fluid physical properties are taken into consideration, and the results are compared. The application range of different impedance models is summarized, and the time-varying impedance model can provide a more accurate result in the simulation of shockwave propagation. The dimensionless analysis method, together with a time-varying impedance model, could be a useful tool for evaluation of the electrohydraulic shockwave in practical applications and applied physics research of underwater spark discharge.

Original languageEnglish
Article number023522
JournalPhysics of Plasmas
Volume26
Issue number2
DOIs
Publication statusPublished - 2019 Feb 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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