涡流发生器控制亚音速扩压器中分离流

 本文对涡流发生器在二元亚音扩压器分离流控制中的应用作了进一步的试验研究。通过精心地选择涡流发生器的结构参数,排列型式和安装位置、有效地控制了处于大瞬变失速流动状态的二元亚音扩压器内的流动分离,从而大大改善了扩压器的稳、动态性能。

SEPARATION CONTROL BY VORTEX GENERATORS IN SUBSONIC DIFFU

An experimental study of separation control by the vortex generators in a subsonic diffuser has been conducted. The flow regime of the two-dimensional diffuser is at the large transitory stall regime. The high efficiency of using vortex generator to control the flow separation in the diffuser can be obtained, if the geometrical parameters, the configuration and the installed location of the vortex generator are selected carefully. The static pressure recovery coefficient Cp is inereased as higin as 66% on separated wall of tiie diffuser, and the steady total pressure loss, the statie and dynamic distortion are also reduced enormously. In shert, the proper vortex generator configuration and the geometrical parameters are selected for separated diffuser, it will be effective to suit for wide range Maeh number at the diffuser entrance. The present results show that the high efficicney could be held until .A10 = 0.61.