近失速工况下叶顶间隙对后置蜗壳斜流叶轮进出口流场影响的实验研究  

INVESTIGATION INTO EFFECT OF TIP CLEARANCE ON INLET AND OUTLET FLOW FIELD OF DIANGONAL IMPELLOR WITH EXIT GUIDE VOLUTE AT NEAR STILL CONDITION

作　　者：魏兵海[1] 吴克启[1] 

机构地区：[1]华中理工大学动力工程系,湖北武汉430074

出　　处：《工程热物理学报》2000年第6期716-718,共3页Journal of Engineering Thermophysics

摘　　要：本文使用５孔探针，在近失速工况下，对３种不同叶顶间隙时的后置蜗壳斜流叶轮进出口流场三维速度分布进行了测量，并将实验结果与非失速小流量的出口流场做了比较。Using five-hole probe, at near stall condition, the three-dimensional velocity distributions of inlet and outlet flow field in diagonal impeller with exit guide volute under three different tip clearances are measured, the experimental datum are compared with what at no stall small flow condition.

关 键 词：叶顶间隙 后置蜗壳 斜流叶轮 流场 叶轮机械 

分 类 号：TK05[动力工程及工程热物理] O354[理学—流体力学]