叶根倒角对离心叶轮气动性能的影响  

INFLUENCE OF ROOT FILLET ON THE AERODYNAMIC PERFORMANCE OF CENTRIFUGAL IMPELLER

作　　者：康顺[1] 孙丽萍[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《工程热物理学报》2009年第1期41-43,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.90718025)

摘　　要：本文分别以一个低压比和一个高压比离心叶轮为对象,采用FINE/TURBO软件包,数值分析了叶片根部加倒角对叶轮流场气动性能的影响。结果表明:叶根倒角的存在会使流量减小,倒角越大,通流量也越小;倒角使压比和效率均有所下降,并对叶根附近流动参数分布带来明显的影响。Taking two kinds of centrifugal compressor impellers with low and high pressure ratios, respectively, this paper studies the influence of root fillet on the aerodynamic performance of centrifugal impellers by using a commercial software FINETg/Turbo. The results show that a blade with root fillet would reduce the mass flow, and the bigger the fillet, the smaller the mass. Due to the fillet, pressure ratio and efficiency would also be declined. However, influence on the 3D flow is only significant near the root range.

关 键 词：离心叶轮 数值模拟 倒角 

分 类 号：TK474.82[动力工程及工程热物理—动力机械及工程]