| Effects of Plasma Aerodynamic Actuation on Corner Separation in a Highly Loaded Compressor Cascade |
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| 作者姓名： | 王学德 赵小虎 李应红 吴云 赵勤 |
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| 基金项目： | supported by National Natural Science Foundation of China(Nos.50906100,10972236);Foundation for the Author of National Excellent Doctoral Dissertation of China(No.201172) |
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| 摘 要： | This paper reports experimental results on the effects of plasma aerodynamic actua- tion （PAA） on corner separation control in a highly loaded, low speed, linear compressor cascade. Total pressure loss coefficient distribution was adopted to evaluate the corner separation control effect in wind tunnel experiments. Results of pressure measurements and particle image velocime- try （PIV） show that the control effect of pitch-wise PAA on the endwall is much better than that of stream-wise PAA on the suction surface. When both the pitch-wise PAA on the endwall and stream-wise PAA on the suction surface are turned on simultaneously, the control effect is the best among all three PAA types. The mechanisms of nanosecond discharge and microsecond discharge PAA are different in corner separation control. The control effect of microsecond discharge PAA turns out better with the increase of discharge voltage and duty cycle. Compared with microsec- ond discharge PAA, nanosecond discharge PAA is more effective in preventing corner separation when the freestream velocity increases. Frequency is one of the most important parameters in plasma flow control. The optimum excitation frequency of microsecond discharge PAA is 500 Hz, which is different from the frequency corresponding to the case with a Strouhal number of unity.
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| 关 键 词： | 分离控制 激励频率 等离子体 高负荷 压气机叶栅 气动 Strouhal数 纳秒放电 |
Effects of Plasma Aerodynamic Actuation on Corner Separation in a Highly Loaded Compressor Cascade |
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| WANG Xuede
,
ZHAO Xiaohu
,
LI Yinghong
,
WU Yun
,
ZHAO Qin.Effects of Plasma Aerodynamic Actuation on Corner Separation in a Highly Loaded Compressor Cascade[J].Plasma Science & Technology,2014,16(3):244-250. |
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| Authors: | WANG Xuede ZHAO Xiaohu LI Yinghong WU Yun ZHAO Qin |
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| Affiliation: | Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University,Xi'an 710038, China |
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| Abstract: | This paper reports experimental results on the effects of plasma aerodynamic actuation(PAA)on corner separation control in a highly loaded,low speed,linear compressor cascade.Total pressure loss coefficient distribution was adopted to evaluate the corner separation control effect in wind tunnel experiments.Results of pressure measurements and particle image velocimetry(PIV)show that the control effect of pitch-wise PAA on the endwall is much better than that of stream-wise PAA on the suction surface.When both the pitch-wise PAA on the endwall and stream-wise PAA on the suction surface are turned on simultaneously,the control effect is the best among all three PAA types.The mechanisms of nanosecond discharge and microsecond discharge PAA are different in corner separation control.The control effect of microsecond discharge PAA turns out better with the increase of discharge voltage and duty cycle.Compared with microsecond discharge PAA,nanosecond discharge PAA is more effective in preventing corner separation when the freestream velocity increases.Frequency is one of the most important parameters in plasma flow control.The optimum excitation frequency of microsecond discharge PAA is 500 Hz,which is different from the frequency corresponding to the case with a Strouhal number of unity. |
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| Keywords: | plasma aerodynamic actuation corner separation compressor cascade |
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