非均匀来流对涡轮流场的影响  

Effect of nonuniform inlet flow on turbine flow field

作　　者：胡绚[1] 张强[2] 

机构地区：[1]湖南大学机械与运载工程学院,湖南长沙410082 [2]中国飞行试验研究院,陕西西安710089

出　　处：《现代机械》2014年第3期34-37,54,共5页Modern Machinery

基　　金：国家自然科学基金(11102064);湖南大学青年教师成长计划

摘　　要：涡轮机械的非均匀进口来流会使得涡轮的流场不均匀,从而影响涡轮的工作性能。本文根据涡轮的工作机理,建立了存在叶尖间隙的涡轮流动模型,考虑来流的周向非均匀性,研究了涡轮流场的变化规律,讨论了不同来流参数对涡轮流场参数的影响。With the existence of the nonuniform inlet flow in a turbine, the flow field would become nonuniform too, the performance of the turbine will thus be influenced. This paper presents a turbine flow model with tip clearance based on turbine＇s working principle. With the circumferential nonuniform of the inlet flow in consideration, the change rules of turbine flow field are analyzed, and the effect of several inlet flow parameters on the turbine flow field is discussed.

关 键 词：涡轮 非均匀来流 叶尖间隙 激励盘理论 

分 类 号：TH133[机械工程—机械制造及自动化]