某F级燃气轮机压气机跨音级特性计算  

Performance Prediction of the Transonic Compressor Stage of a Class F Gas Turbine

作　　者：马兆龙[1,2] 张宏武[1] 何磊[3] 赵连会[3] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100190 [3]上海汽轮机有限公司,上海200240

出　　处：《燃气轮机技术》2011年第3期40-43,共4页Gas Turbine Technology

摘　　要：本文作为某F级燃气轮机轴流压气机整机特性计算的一部分,考虑到跨音级存在激波及其与附面层的相互干涉、动叶叶顶泄漏等复杂的流动现象,针对该压气机的跨音级(第一级)进行单独计算。采用NUME-CA软件对压气机内部流场进行数值计算。实际计算表明:文中使用的方法可以很好地计算出压气机全工况特性。选取近失速点、近设计点、近堵点,对比不同工况下动叶通道的流动状况,分析了激波和附面层分离的情况,为深入认识该跨音级内部流动,以及改进设计提供依据。A numerical study is carried out to investigate the performance of a transonic compressor stage which is the first stage of a Class F gas turbine＇s axial flow compressor. The overall performance was calculated by NUMECA software very smoothly. Near stall point, design point and near choke point were selected to acquire flow characteristics in the rotor passage. In addition, shock wave and boundary layer separation were analyzed, in order to get more physical information and improve aerodynamic design of this compressor stage later.

关 键 词：跨音级 数值模拟 特性计算 叶顶间隙 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]