DBD涡流发生器及其在角区流动控制中的数值研究
收稿日期: 2015-10-21
修回日期: 2016-01-05
网络出版日期: 2016-01-11
基金资助
国家自然科学基金(11372027)
Numerical study of DBD vortex generator and application in junction flow control
Received date: 2015-10-21
Revised date: 2016-01-05
Online published: 2016-01-11
Supported by
National Natural Science Foundation of China (11372027)
徐向南 , 张华 , 胡波 . DBD涡流发生器及其在角区流动控制中的数值研究[J]. 航空学报, 2016 , 37(6) : 1743 -1752 . DOI: 10.7527/S1000-6893.2016.0006
In order to explore the effects of dielectric barrier discharges (DBD) vortex generator on the horseshoe vortex, the phenomenological model is applied in the paper to the numerical simulation. The characteristics of the streamwise vortex structure and its control on the horseshoe vortex are analyzed. The results indicate that the tornado-like vortex is formed at the edge of the upstream electrode, and streamwise vortex engulfs the free shear layer and gains continuous vortices. When the induced flows on the two sides of symmetry plane point to the symmetry and the direction of the induced vortex is opposite to the horseshoe vortex, the strength of horseshoe vortex can be suppressed effectively in junction flow at the root of the cylinder. Otherwise the control effect is poor. Three factors, the viscous diffusion of the induced vortex on horseshoe vortex, and the mixing and low pressure of the induced vortex, related to the control mechanism are pointed out.
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