Experimental investigation of nanosecond discharge plasma aerodynamic actuation

doi:10.1088/1674-1056/21/4/045202

Abstract In this paper we report on an experimental study of the characteristics of nanosecond pulsed discharge plasma aerodynamic actuation. The N₂ (C³$\Pi$_u) rotational and vibrational temperatures are around 430 K and 0.24 eV, respectively. The emission intensity ratio between the first negative system and the second positive system of N₂, as a rough indicator of the temporally and spatially averaged electron energy, has a minor dependence on applied voltage amplitude. The induced flow direction is not parallel, but vertical to the dielectric layer surface, as shown by measurements of body force, velocity, and vorticity. Nanosecond discharge plasma aerodynamic actuation is effective in airfoil flow separation control at freestream speeds up to 100 m/s.

Keywords: plasma aerodynamic actuation nanosecond pulsed discharge plasma flow control optical emission spectra

Received: 15 June 2011
Revised: 06 September 2011
Accepted manuscript online:

PACS:	52.50.Dg	(Plasma sources)
	52.80.Pi	(High-frequency and RF discharges)
	52.70.Kz	(Optical (ultraviolet, visible, infrared) measurements)
	47.85.L-	(Flow control)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50906100 and 10972236) and the Science Foundation of National Excellent Doctoral Dissertation of China (Grant No. 201172).

Corresponding Authors: Wu Yun,wuyun1223@126.com
E-mail: wuyun1223@126.com

Cite this article:

Wu Yun(吴云), Li Ying-Hong(李应红), Jia Min(贾敏), Liang Hua(梁华), and Song Hui-Min(宋慧敏) Experimental investigation of nanosecond discharge plasma aerodynamic actuation 2012 Chin. Phys. B 21 045202

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