Experimental investigation of nanosecond discharge plasma aerodynamic actuation

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

中国物理B ›› 2012, Vol. 21 ›› Issue (4): 45202-045202.doi: 10.1088/1674-1056/21/4/045202

吴云,李应红,贾敏,梁华,宋慧敏

收稿日期:2011-06-15 修回日期:2011-09-06 出版日期:2012-02-29 发布日期:2012-02-29
通讯作者: 吴云,wuyun1223@126.com E-mail:wuyun1223@126.com

Experimental investigation of nanosecond discharge plasma aerodynamic actuation

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)

Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China

Received:2011-06-15 Revised:2011-09-06 Online:2012-02-29 Published:2012-02-29
Contact: Wu Yun,wuyun1223@126.com E-mail:wuyun1223@126.com
Supported by:
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).

摘要/Abstract

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.

Key words: plasma aerodynamic actuation, nanosecond pulsed discharge, plasma flow control, optical emission spectra

中图分类号: (Plasma sources)

52.50.Dg

52.80.Pi (High-frequency and RF discharges) 52.70.Kz (Optical (ultraviolet, visible, infrared) measurements) 47.85.L- (Flow control)

吴云, 李应红, 贾敏, 梁华, 宋慧敏. [J]. 中国物理B, 2012, 21(4): 45202-045202.

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[J]. Chin. Phys. B, 2012, 21(4): 45202-045202.

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Experimental investigation of nanosecond discharge plasma aerodynamic actuation

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