【作者】 常浩； 董金钟；

【Author】 CHANG Hao;DONG Jin-zhong;School of Energy and Power Engineering,Bei Hang University;

【机构】 北京航空航天大学能源与动力工程学院；

【摘要】 对合成射流和定常射流两种主动流动控制方法改善矩形转圆形S弯进气道内流场进行了数值模拟研究。详细讨论了合成射流角度对控制效果的影响。对使用两种控制方法得到的不同结果进行了分析。结果表明:合成射流角度显著影响控制效果。在合成射流角度为45°时,进气道出口总压恢复系数提高了0.71%,总压畸变系数减少了59.5%。动量系数相同时,合成射流控制效果优于定常射流,具有更高的能效比。更多还原

【Abstract】 Numerical simulation was used to investigate the effects of two active flow control methods, synthetic jet and steady jet, in improving performance of a rectangular to circular S-shaped inlet. The influences of synthetic jet injection angle on the control result were discussed in detail. In addition, the different effects of the two active control methods were analyzed. The results show that injection angle has a significant influence on the effect of synthetic jet control. The total pressure recovery coefficient increases by 0.71%, and the total pressure distortion coefficient reduces by 59.5% when the injection angle is 45 degree. The result of synthetic jet control is better than steady jet control while at the same jet momentum coefficient. So the synthetic jet used as an active flow control method in this S-shaped inlet has higher energy efficiency ratio.更多还原