论文部分内容阅读
在低速大尺寸压气机试验台上，用单斜热丝、高频压力探针及由旋转四坐标全电动探针位移机构带动的五孔气动探针，测量了单级压气机转子出口和单转子压气机叶片通道尖区在不同流量状态下三维平均和亲流流场。设计状态，叶尖泄漏涡的发展及其与端壁附面层的交混决定了尖区的流动特性。小流量状态，叶片吸力面附面层增厚，近失速状态尖部吸力面附面层发生分离，吸力而附面层内径向潜移强烈，叶尖吸力面角区产生大范围强旋涡，角区部分低能流体移向叶尖通道中部，与端壁附面层、泄漏涡、刮削涡及主流发生交混．
In the low-speed and large-size compressor test rig, the single-hole compressor, the high frequency pressure probe and the five-hole pneumatic probe driven by the rotating four-coordinate all-electric probe displacement mechanism were used to measure the single-stage compressor rotor outlet and single Three-dimensional averaging and relative flow field of rotor blade tip at different flow regimes. Design state, the development of tip leakage vortex and its confluence with the end wall determines the flow characteristics of the tip area. In the condition of small flow rate, the thickening of the surface layer on the blade suction surface and the separation of the top suction surface near the stalling state, the suction layer has a strong radial submergence in the surface layer, Part of the low-energy fluid moves to the middle of the tip channel, and end-wall laminates, leaking vortex, scraping vortex and mainstream mixed.