摘要
用流动显示技术研究矢量单喷流对65°尖前缘三角翼前缘涡破裂影响的实验结果表明，偏转角度小于10°时，矢量喷流对前缘涡破裂的影响很小；随着喷流偏转角的增大，喷流对流动控制的作用越来越大，喷流使喷流偏转方向一侧前缘涡破裂位置的延迟量增大，而另一侧前缘涡有提前破裂的趋势。在相同的喷流情况下，随着攻角的增大，喷流的控制效果有减弱的趋势；另外当攻角 α =40°时，很小的喷流就可以使前缘涡由左右掺混变为喷流方向的单向运动。
The flow visualization technique has been used to study the effects of vectored single jet on the leading edge vortex breakdown of 65° delta wing. The experimental results indicate that there is a little effect of the jet on the leading edge vortex breakdown when the angle of the vectored jet is less than 10°. With the increase of the vectored angle, the effect of the jet on the flow control becomes stronger, i.e. the jet makes the leading edge vortex breakdown delay in the direction of the vectored jet, and make another leading edge vortex breakdown early. In the case of the same vectored jet, the control effects of the jet tend to be weak with the increase of the angle of attack. Moreover, a little jet can make the mixed leading edge vortex flow to be come the single motion in the jet direction when α =40°.
出处
《流体力学实验与测量》
CSCD
2000年第3期61-65,共5页
Experiments and Measurements in Fluid Mechanics
基金
教育部博士点基金
国防科技预研基金资助项目
