端壁等离子体气动激励抑制高负荷压气机叶栅角区流动分离实验

赵勤; 吴云; 李应红; 赵小虎; 张海灯

端壁等离子体气动激励抑制高负荷压气机叶栅角区流动分离实验

空军工程大学航空航天工程学院等离子体动力学重点实验室, 西安710038

基金项目: 国家自然科学基金(50906100,51336011,10972236);高等学校全国优秀博士学位论文作者专项基金(201172)

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出版历程
- 收稿日期: 2012-12-17
- 刊出日期: 2013-09-28

Experiment of flow separation control in highly loaded compressor cascade corner by endwall plasma aerodynamic actuation

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

摘要

摘要: 为揭示端壁等离子体气动激励抑制高负荷压气机叶栅角区流动分离的影响规律和流场特征,在不同流场参数和激励条件下分别开展了微秒脉冲和纳秒脉冲等离子体气动激励抑制叶栅流动分离的实验研究.结果表明:端壁等离子体气动激励可以有效抑制叶栅角区的流动分离,其作用效果在攻角为3°时最佳,随攻角的增大逐渐下降;微秒脉冲激励的流动控制效果随来流速度的增大而降低,随激励电压和占空比的增大而提高,最佳非定常脉冲频率为500Hz;在较高来流速度下,微秒脉冲激励的作用效果十分微弱,但纳秒脉冲激励能够有效抑制角区流动分离;纳秒脉冲激励的流动控制效果随激励电压增大而提高,激励频率对控制效果至关重要,作用效果随激励频率的增大而不断增强,但当激励频率为5kHz时,作用效果有所下降.
- 端壁等离子体气动激励 /
- 压气机 /
- 叶栅 /
- 角区流动分离 /
- 流动控制
Abstract: To discover the flow characters and main influencing rules of flow separation control in highly loaded compressor cascade corner by endwall plasma aerodynamic actuation(PAA),microsecond pulse and nanosecond pulse plasma flow control experiments under different flowfields and actuation conditions were carried out.Results show that PAA on the endwall can effectively prevent the flow separation in cascade corner,and actuation effects drop with the increase of angle of attack,but become best at angle of attack of 3 degree;microsecond discharge PAA effects drop with the increase of freestream velocity but increase with the increase of the actuation voltage and duty cycles,and the optimum unsteady pulsed excitation frequency is 500Hz;compared to microsecond discharge PAA,nanosecond discharge PAA is more effective at higher freestream velocity;nanosecond discharge PAA effects are improved with the rising actuation voltage;the actuation frequency is of vital importance,and the effects are improved with the increase of actuation frequency,but when the actuation frequency is 5kHz,the effects will drop.
- endwall plasma aerodynamic actuation /
- compressor /
- cascade /
- corner flow separation /
- flow control

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参考文献(17)

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