Shock-wave/boundary-layer interactions on wedge with sawtooth leading edge
In order to investigate the influence of three-dimensional sawtooth configuration on the flow field structure of incident shock-wave/boundary-layer interaction,the flow field of wedge with sawtooth leading edge/plate was numerically simulated and analyzed,and the influence laws of different sawtooth depths on the flow field were summarized.The results showed that,compared with the wedge with straight leading edge,the sawtooth wedge was affected by overflow.Meanwhile,the incident shock wave presented a curved three-wave structure,the shock wave intensity was weakened,the wave angle was reduced,and the flow field structure moved backward;the separation zone on plate presented a"concave"spatial structure.The spreading direction of the separation zone was low in the middle but high on both sides,and the flow direction was short in the middle but long on both sides.With the increase of sawtooth depth,the flow field structure moved backward,and the three-dimensional characteristics of the separation zone became more obvious.In the overflow model,due to the side overflow,the separation at the symmetrical plane was the largest,and the separation zone presented a three-dimensional"semi concave"spatial structure.Compared with the original overflow model,the sawtooth overflow reduced the intensity of the incident wave system and the side overflow.
wedge/platesawtooth leading edgeflow field characteristicsshock-wave/boundary-layer interactionseparation zoneoverflow
NETL
NSTL
万方数据
