Active control of flow-induced vibration of blades in a plane cascade by a plasma synthetic jet

被引：0
|
作者：
Liu R. [1 ,2 ]
Chen Z. [1 ,2 ]
Lin R. [1 ]
Lin Q. [1 ,2 ]
机构：
[1] School of Aerospace Engineering, Xiamen University, Xiamen
[2] Fujian Key Laboratory of Plasma and Magnetic Resonance Research, Xiamen
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2023年 / 44卷 / 20期
基金：
中国国家自然科学基金;
关键词：
compressor; flow-induced vibration; particle image velocimetry; plasma synthetic jet; rotor blade; tip leakage vortex;
D O I：
10.7527/S1000-6893.2023.28430
中图分类号：
学科分类号：
摘要：
The tip gap leakage vortex of the compressor rotor blade is an important cause of its vibration failure. To suppress the blade vibration intensity induced by tip clearance leakage vortex，through the planar blade grid wind tunnel test，the blade vibration phenomenon is captured. The vibration mode characteristics are analyzed，and the flow structure of the blade tip gap vortex is measured. Then，the plasma synthesis jet is used to actively control the leakage vortex between blade tips and suppress the vibration caused by the blade. The control effects of different jet layouts and excitation frequencies are explored，and the control mechanism is clarified. The results show that when the incoming flow velocity is 30 m/s and the blade installation angle is 15°，blade resonance occurs. The interstitial leakage vortex of the tip gap flows 0.25 and 0.50 times the chord length cross-section，which is the key position for active control of the plasma synthesis jet. At 0.50 times the chord length cross-section，plasma synthetic jets sprayed in the direction of the blade basin control vibration best compared to the spraying towards the tip and back of the leaf. At the excitation frequency of 220 Hz，the vibration stress of the blade is reduced by 31.6%. The control mechanism is that the plasma synthesis jet intervenes in the initiation of the leakage flow between the blade tip，reduces the pressure gradient of the blade pressure surface and the suction surface，inhibits the formation and development of the tip leakage vortex，thereby reducing the strength of the leakage vortex and reducing the excitation force that induces blade vibration. © 2023 AAAS Press of Chinese Society of Aeronautics and Astronautics. All rights reserved.
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