Analysis of effect of synthetic jet on fluid-solid coupling characteristics around cylinder

被引：0
|
作者：
Ding L. [1 ,2 ]
Yang L. [1 ,2 ]
Wang H. [1 ,2 ]
Zhang L. [1 ,2 ]
机构：
[1] Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education, Chongqing University, Chongqing
[2] School of Energy and Power Engineering, Chongqing University, Chongqing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2019年 / 34卷 / 12期
关键词：
Active control; Flow-induced vibration; Fluid-solid coupling; Synthetic jet; Vortex shedding;
D O I：
10.13224/j.cnki.jasp.2019.12.001
中图分类号：
学科分类号：
摘要：
The active control of the characteristics of flow around a bluff body and flow-induced vibration was numerically investigated by using the synthetic jet. Results showed that the vortex-induced vibration of the cylinder was well suppressed with the increase of the momentum coefficient of synthetic jet. As the jet position moved from the rear stagnation point to the front stagnation point, the vortex shedding mode of the cylinder wake showed the evolution of the steady state-transition state-antisymmetric 2S vortex shedding mode attached to the backflow surface of the cylinder. The two-degree-of-freedom vibration trajectory of the cylinder was in the shape of "8", "one" in the case of complete suppression, and "crescent" in the case of partial suppression. The introduction of synthetic jet can effectively reduce the lift force on the cylinder. When the synthetic jet was located at the edge of 1/4 arc on the leeward side of the cylinder, the in-flow oscillation and cross-flow oscillation of the cylinder can be suppressed with the best suppression effect. © 2019, Editorial Department of Journal of Aerospace Power. All right reserved.
引用
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页码：2529 / 2538
页数：9
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