流体振荡器在进气道流动控制中的应用研究

采用数值方法,对流体振荡器在S形进气道流动分离中的控制效果进行了仿真研究。应用CFD软件模拟计算了流体振荡器对进气道分离控制的作用,详细讨论了不同射流频率和射流角度对控制效果的影响。通过对流场的分析得出:射流频率和射流角度对控制效果有显著影响。射流频率为554 Hz,射流角度为45°时,控制效果最佳,总压恢复系数增加了0.403%,总压畸变指数减少了6.96%,分离区长度减少了8.07%。

Active flow control with fluidic in S-shaped inlet

The numerical method is used to simulate the control effect using fluidic in the S-shaped inlet. Using CFD software to simulate the effect of fluidic on the separation control of inlet, and the effects of different jet frequencies and jet angles on the control effect are discussed in details. The results show that the frequencies of the jet and the jet angle have significant influence on the control effect. In this paper, when the jet frequency is 554Hz and the jet angle is 45 degrees, the control effect is the best. The total pressure recovery coefficient increases by 0.403%, the total pressure distortion index decrease by 6.96%, and the length of the separation zone decrease by 8.07%.