双分流叶片跨声速离心压气机流动特性仿真研究  

Simulation Research on Flow Characteristics of Transonic Centrifugal Compressor with Double Splitter

作　　者：刘贵升 佟鼎[1] 李广瑞[1] 李晶晶 侯琳琳[1] 花琳[1] 庄丽[1] LIU Guisheng;TONG Ding;LI Guangrui;LI Jingjing;HOU Linlin;HUA Lin;ZHUANG Li(National Key Laboratory of Diesel Engine Turbocharging Technology,China North Engine Research Institute,Tianjin 300400,China)

机构地区：[1]中国北方发动机研究所柴油机增压技术重点实验室,天津300400

出　　处：《车用发动机》2020年第5期36-40,共5页Vehicle Engine

基　　金：高压比离心压气机叶轮自由掠型进出口叶片构型方法研究(6142212180101)。

摘　　要：以某高压比跨声速离心叶轮为基础,为进一步强化其性能,对双分流叶片叶轮内部流动特性进行了仿真分析。研究结果表明:采用双分流叶片结构,能够改善堵塞工况的流动,降低主叶片前缘激波强度和叶片表面载荷,随着转速的提升,压比提升效果明显;在数量改进的约束条件下,两种双分流叶片结构各有其特点,所得到的结果为高压比离心压气机叶轮性能优化提供新的思路。The internal flow characteristics of impeller with double splitters were simulated in order to strengthen the performance of compressor based on a high pressure and transonic centrifugal impeller.The results show that the use of double splitter can improve the flow state at chocking point and decrease the shock wave intensity and main blade loading.With the increase of rotational speed,the pressure ratio of compressor increases obviously.Under the constraint of blade number,two kinds of impellers with double splitter have their own characteristics.Accordingly,the results can provide a new idea for the optimization of high pressure ratio centrifugal compressor.

关 键 词：离心压气机 双分流叶片 仿真 流动分布 

分 类 号：TK421.8[动力工程及工程热物理—动力机械及工程]