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利用流线追踪及微修型技术,设计了一种类水滴转圆形内转式进气道,针对该进气道开展了初步的数值与试验研究。研究结果表明:该进气道保持了流线追踪进气道前缘激波结构,微型面融合方法最大限度减少了对进气道流场的影响;Ma=6.0/AOA=2°时,试验测得的机体/唇口侧压力分布与CFD吻合较好,隔离段出口截面皮托压分布规律基本一致,但在值域上存在一定偏差;随着攻角由-2°增至6°,唇口反射激波在机体侧的交汇点前移约55mm;堵塞度在70%~75%时,进气道最大反压约0.41MPa;进气道启动状态下,未受反压扰动点压力脉动小,波动不明显;进气道启动但受反压扰动点压力脉动增加,波动范围增大;进气道不启动状态下受扰点压力脉动大,随时间变化的周期性表现明显,低频振动明显。
Using the method of streamline tracing and micro-repairing, a kind of water-droplet-rotating inner transimission inlet was designed, and preliminary numerical and experimental studies were carried out for this inlet. The results show that the inlet keeps the shock wave front track structure and the mini-face fusion method minimizes the influence on the inlet flow field. When Ma = 6.0 / AOA = 2 °, The measured body / lip side pressure distribution is in good agreement with CFD, and the distribution of pito pressure at the exit section of the isolation section is basically the same, but there is a certain deviation in the range; as the angle of attack increases from -2 ° to 6 °, Lip reflection shock at the intersection of the body side of the front shift about 55mm; 70% to 75% plugging the maximum back pressure of the inlet about 0.41MPa; inlet is not activated state pressure disturbance points The pulsation is small and the fluctuation is insignificant. When the inlet is started but the pressure pulsation is increased by the counter-pressure disturbance point, the fluctuation range is increased. The pressure pulsation of the perturbation point is big when the intake passage is not started, and the cyclical performance obviously changes with time. Vibration obvious.