带倾角相邻合成射流激励器射流矢量控制研究

基于合成射流激励器全流场计算模型——X-L模型,对带倾角相邻合成射流激励器宏观低速流动进行数值模拟。讨论了主次流幅值比、两激励器相位差、频率、倾斜角等参数对主流偏转角度的影响,并将单激励器与相邻激励器对主流的矢量控制效果进行了对比。结果显示,相邻激励器对主流的控制效果优于单激励器;激励器相位差存在最佳值;倾角改变激励器的最佳频率,对最佳相位差影响不大。

Investigation on vector control of adjacent synthetic jet actuators with inclination angle

Based on an overall flow field calculation medel--X-L model, the macroscopic low-speed flow of adjacent synthetic jet actuators with inclination angle was numerically simulated. The effects of amplitude ratio between primary jet and adjacent jet, phase difference, frequency and inclination angle on primary flow deflection were discussed, and control effects of single actuator and adjacent actuator on primary flow were compared. The results show that active flow control effect of adjacent actuators is superi-or to that of single actuator, and there exits an optimal value for phase difference and inclination angle of actuators. The optimal fie-quency can be changed by inclination angle of actuators, which has a little effect on optimal phase difference.