Discharge process and gas heating effect in nanosecond-pulse-driven plasma actuator

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

Abstract

A discharge-fluid coupling simulation was carried out in order to investigate the effect of the pulse polarity on discharge process and flow structure induced by a nanosecond-pulse-driven plasma actuator. The result of the discharge simulation shows that the pulse polarity has an impact on the discharge structure and current waveform. The total amount of the deposited energy to the gas is larger in the positive pulse case than in the negative pulse case when the same peak amplitude pulses are applied. The pulse polarity also affects the structure of the induced shock wave; the shock wave consists of planar and circular parts for the positive pulse case, while no planar part is obtained for the negative pulse case. The difference of the shock wave structure is caused by the difference of the discharge structure. Our result suggests that the positive pulse is preferable to heat large area, while the negative pulse is superior in view of the efficient generation of the strong shock wave. The difference of the shock wave structure would affect the performance of the flow separation control.

Original languageEnglish
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
Publication statusPublished - 2019 Jan 1
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: 2019 Jan 72019 Jan 11

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period19/1/719/1/11

ASJC Scopus subject areas

  • Aerospace Engineering

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