等离子体气动激励特性及其抑制
叶栅流动分离的实验研究

核聚变与等离子体物理 ›› 2013, Vol. 33 ›› Issue (4): 366-373.

等离子体气动激励特性及其抑制叶栅流动分离的实验研究

王学德1，赵小虎1，王路成2，路加武3，林亚明3

(1. 空军工程大学等离子体动力学重点实验室，西安 710038； 2. 中国人民解放军空军第四飞行学院，石家庄 050000； 3. 中国人民解放军94710部队，无锡 214141)

出版日期:2013-12-15 发布日期:2013-12-16
作者简介:王学德(1966-)，男，河北大名人，硕士，副教授，主要研究方向为等离子体流动控制。
基金资助:
国家自然科学基金资助项目(50906100；10972236)

Experimental research on the characteristic of plasma aerodynamic actuation and flow separation control on a compressor cascade

WANG Xue-de1, ZHAO Xiao-hu1, WANG Lu-cheng2, LU Jia-wu3, LIN Ya-ming3

(1. Engineering College, Science and Technology on Plasma Dynamics Laboratory, Xi’an 710038; 2. The Fouth Flight College of the Air Force, The Chinese People’s Liberation Army, Shijiazhuang 050000; 3. The 94710 Troop, The Chinese People’s Liberation Army, Wuxi 214141)

Online:2013-12-15 Published:2013-12-16

摘要/Abstract

摘要： 为揭示纳秒脉冲等离子体气动激励特性及其抑制高负荷压气机叶栅流动分离的作用效果与影响规律，利用PIV流场测试、高速纹影和压力测试开展实验研究。结果表明，纳秒脉冲等离子体气动激励诱导出垂直向上的冲击流动，冲击波的持续时间为80μs左右；纳秒脉冲激励能够有效抑制高负荷压气机叶栅流动分离，其流动控制效果随激励电压和下表面电极宽度的增大以及电极形状改变为弯曲电极而提高，可最大降低总压损失8.4%；激励频率是叶栅等离子体流动控制效果的重要影响因素，端壁横向激励的最佳激励频率为4.0kHz；吸力面流向激励主要改善中间叶高流动特性，而抑制角区流动分离的能力较弱；端壁横向激励通过抑制横向流动，较大程度上减弱了低能流体在角区的积聚，抑制角区流动分离能力较强；组合激励结合了吸力面流向激励和端壁横向激励的作用优势，因而流动控制效果最好。

关键词: 等离子体气动激励, 压气机, 叶栅, 冲击波, 角区

Abstract: To discover the characteristic of nanosecond pulsed plasma aerodynamic actuation (PAA) as well as the effect and influence law of flow separation control on a highly loaded compressor cascade by PAA, experimental investigations of PIV measurements, high-speed Schlieren visualization and pressure measurements were conducted. Results show that a shock wave is induced by nanosecond pulsed PAA to spread outward and can last only about 80μs. Nanosecond pulsed PAA can effectively prevent the flow separation in a highly loaded compressor cascade, and the control effect enhances with the increase of lower electrode width and actuation discharge as well as the shape of curved electrodes. The relative reduction of pitch-averaged total pressure loss coefficient is up to 8.4%. The actuation frequency is one key factor affecting the control effect of nanosecond pulsed PAA, and the optimal actuation frequency is 4kHz. The streamwise PAA on the suction surface can mainly change the flow characteristic at midspan, but has weak impact on corner separation. The pitchwise PAA on the endwall can reduce the accumulation of low-energy fluids at the suction surface and endwall corner by inhibiting the cross flow. The control effect of streamwise PAA on the suction surface combined with pitchwise PAA on the endwall is the best.

Key words: Plasma aerodynamic actuation, Compressor, Cascade, Shock wave, Corner

中图分类号:

O539

王学德1，赵小虎1，王路成2，路加武3，林亚明3. 等离子体气动激励特性及其抑制叶栅流动分离的实验研究[J]. 核聚变与等离子体物理, 2013, 33(4): 366-373.

WANG Xue-de1, ZHAO Xiao-hu1, WANG Lu-cheng2, LU Jia-wu3, LIN Ya-ming3. Experimental research on the characteristic of plasma aerodynamic actuation and flow separation control on a compressor cascade[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2013, 33(4): 366-373.

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