Body force generation control by modulating applied voltage waveform in tri-electrode plasma actuator

Kumi Nakai, Daichi Hasegawa, Asami Hatamoto, Hiroyuki Nishida.

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Tri-electrode plasma actuator (TED-PA), which has an additional electrode with DC high voltage, can induce stronger jet than that of conventional two-electrode plasma actuator. However, the engineering application is limited due to the arc discharge occurrence with increasing the applied voltage amplitude. In this study, we aim to enhance the EHD force generation in the TED-PA without increasing the voltage amplitude by utilizing the EHD force generation around the DC electrode effectively. First, we conduct a plasma simulation to investigate the mechanism of the EHD force generation. As a result, the positive EHD force generation around the DC electrode is due to the drift motion of positive ions generated by DC discharge around the DC electrode, and enhanced by electron supply from negative discharge around the AC electrode which appears in the negative-going voltage phase of the AC voltage. On the other hand, the drift motion of negative ions generated by the negative discharge generates the negative EHD force not only around the AC electrode but also around the DC electrode. Second, we propose to apply a waveform voltage with negative-going voltage phase of 5 % and the phase with negative peak voltage of 90 % to the AC electrode based on the mechanism. The simulation results indicate that the proposed waveform can significantly enhance the EHD force generation in the TED-PA.

本文言語English
ホスト出版物のタイトルAIAA Scitech 2019 Forum
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624105784
DOI
出版ステータスPublished - 2019
外部発表はい
イベントAIAA Scitech Forum, 2019 - San Diego, United States
継続期間: 2019 1 72019 1 11

出版物シリーズ

名前AIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
国/地域United States
CitySan Diego
Period19/1/719/1/11

ASJC Scopus subject areas

  • 航空宇宙工学

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