叶顶间隙对离心叶轮性能影响的数值模拟  

Numerical Simulation for Influence of Tip Clearance on Centrifugal Impeller Performance

作　　者：程书山[1] 楚武利[1] 

机构地区：[1]西北工业大学动力与能源学院,西安市710072

出　　处：《风机技术》2010年第4期7-8,31,共3页Chinese Journal of Turbomachinery

摘　　要：对5个不同叶顶间隙下离心叶轮通道中的流动情况进行了数值模拟,得到了不同间隙时叶轮的效率、压比随质量流量变化的性能曲线,分析了间隙对叶轮性能的影响。The numerical simulation is carried out for the flow situation in centrifugal impeller channel with five different tip clearances, and the perfor-mance curve of efficiency, pressure ratio varying as mass flowrate at different clearances is obtained. The influence of clearance on impeller performance is analyzed.

关 键 词：离心式压缩机 叶轮 叶顶间隙 数值模拟 

分 类 号：TH452[机械工程—机械制造及自动化]