三级燃气透平进口热斑迁移路径分析  

Study on the Migration of Hot Streak in Three-stage Turbine

作　　者：李园园[1] 高松[1] 于飞龙[1] 段静瑶 蔡柳溪[1] 上官博[1] 肖俊峰[1] 

机构地区：[1]西安热工研究院有限公司,西安710032

出　　处：《燃气轮机技术》2017年第1期21-25,共5页Gas Turbine Technology

基　　金：国家自然科学基金(51606152;51405384)

摘　　要：采用三维非定常数值方法对不同时序位置的进口热斑在三级透平叶栅通道内运动路径和影响范围进行分析。结果表明:热斑在三级透平通道内的迁移路径较为稳定;经过三级透平流道的折转,正对通道中心和正对叶片前缘的热斑周向偏移了约38°;动叶出口处热斑以动叶通过频率沿周向摆动;热斑的周向影响范围逐渐增大。Three dimensional unsteady numerical method was used to analyze the effects of inlet hot streak circumferential clocking onthe migration avenue and influence domain in the three stage turbine cascade. The results showed thatthe migration avenue of hot streak in the three-stage turbine channel is relatively stable. After flowing through the three-stage turbine blade flow passage,hot streak align with the mid blade passage and the blade leading edgemigrated about 38 degrees circumferentially. Hot streak at rotor outlet fluctuatedin the circumferential direction at rotor blade passing frequency. Circumferential domains of hot streak effected gradually increased.

关 键 词：透平 热斑 迁移路径 非定常 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]