Induced flow and optical emission generated by a pulsed 13.56 MHz-5 kHz plasma actuator

James Dedrick, Seong Kyun Im, Mark Cappelli, Rod W. Boswell, Christine Charles

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A dual-frequency driven plasma actuator is studied with respect to the influence of changing the position of radio frequency 13.56 MHz pulses within the phase of a low-frequency (LF) 5 kHz sinusoidal voltage. Fast imaging and 2-D particle image velocimetry are used to study the optical emission from the discharge and the generation of an induced flow, which can be useful for aerodynamic flow control, in ambient air. The results show that the propagation of the discharge away from the powered electrode and the velocity of the induced flow are maximized when the pulses are positioned at the peaks of the LF waveform. In contrast, the most intense optical emission is found to occur when the pulses are positioned close to the zero crossings for positive LF waveform voltages. The reasons behind these observations are discussed.

Original languageEnglish
Article number6634242
Pages (from-to)3275-3278
Number of pages4
JournalIEEE Transactions on Plasma Science
Volume41
Issue number12
DOIs
Publication statusPublished - 2013 Dec
Externally publishedYes

Keywords

  • Actuators
  • Flow control
  • Optical imaging
  • Plasma applications
  • Surface discharges

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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