附面层抽吸对高负荷扩压叶栅损失的影响  

EFFECTS OF BOUNDARY LAYER SUCTION ON THE LOSS OF HIGHLY-LOADED COMPRESSOR CASCADE

作　　者：郭爽[1] 陈绍文[1] 宋宇飞[1] 张鹏武[1] 陈浮[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《工程热物理学报》2009年第4期574-576,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基助项目(No.50876023);国家973项目(No.2007CB210100)资助

摘　　要：实验研究了低速条件下吸力面附面层吸除对某高负荷扩压叶栅损失的影响,分析了叶栅出口截面损失和气流角的分布。结果表明,附面层吸除降低了叶栅出口的总损失,并提高了气流的折转能力;吸气位置对损失的影响随吸气量的增大而增大;吸力面采用附面层抽吸对叶展中部区域损失的改善要好于近端壁区。The experimental investigation of the effect of boundary layer suction on the loss of highlyloaded compressor cascade in a low-speed situation was carried out, The distributions of the secondary flow vector and flow angle at the cascade outlet were measured and analyzed in detail. The results show that boundary layer suction can significantly decrease the exit loss coefficient and increase the flow turning capacity. The effects of suction locations on the loss are greater as suction flow rate increases. The improvement of the loss near mid-span is greater than near end-wall.

关 键 词：高负荷叶栅 附面层吸除 吸气位置 吸气量 

分 类 号：TK474.7[动力工程及工程热物理—动力机械及工程]