Numerical simulation of transonic airfoil buffet suppression with slotted cavity

被引：0
|
作者：
Zhou W. [1 ]
Zhang Z. [1 ]
Qu K. [2 ]
Zhai Q. [1 ]
机构：
[1] School of Aeronautics, Northwestern Polytechnical University, Xi'an
[2] Department of Civil Engineering, City College, The City University of New York, New York, 10031, NY
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2016年 / 37卷 / 02期
关键词：
Buffet; Cavity; Shock oscillation; Suppression; Transonic;
D O I：
10.7527/S1000-6893.2015.0121
中图分类号：
学科分类号：
摘要：
The unsteady Reynolds average Navier-Stokes (URANS) method is used to compute the transonic buffet, the shock oscillations and the evolution of flow structures of 18% thick biconvex circular-arc airfoil. The suppression effects of passive control with different configurations on transonic airfoil buffet are investigated by numerical method. The computational results reveal that the self-sustained shock oscillation on 18% thick biconvex circular-arc airfoil at transonic speeds has only forward motion without noticeable backward motion. A cavity with ventilating slots, as a passive control measure, can alleviate transonic buffet, but has little influence on the buffet frequency. Deeper cavity has greater effect of suppression but the variation of the cavity depth does not influence the buffet frequency. The suppression effects between 2-slot, 3-slot and 4-slot cavities are insignificant and the number of slots has little influence on the buffet frequency. © 2016, Press of Chinese Journal of Aeronautics. All right reserved.
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页码：451 / 460
页数：9
相关论文
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