涡轮叶栅尾迹对泄漏流影响的试验研究  

THE INVESTIGATION FOR INFLUENCE OF WAKE ON LEAKAGE FLOW IN A TURBINE CASCADE

作　　者：刘火星[1] 袁耀[1] 余弦[1] 邹正平[1] 

机构地区：[1]北京航空航天大学航空发动机气动热力国防科技重点实验室,北京100191

出　　处：《工程热物理学报》2010年第4期581-584,共4页Journal of Engineering Thermophysics

基　　金：武器装备预研基金项目(No.9140C4103090803)

摘　　要：本文利用运动圆柱排模拟上游叶片尾迹,在平面涡轮叶栅上研究了上游尾迹与叶栅通道内泄漏流的相互作用,初步讨论了尾迹与泄漏流相互作用的机理,研究发现利用这种相互作用可以控制泄漏涡的强度、减小泄漏损失,进而可实现提高涡轮效率的目的。This paper presents research work by using a moving bar as a source of modelling wake of blade.The experimental test of interactions between wake and leakage flow are complemented on a linear turbine cascade,and the mechanism of interactions are discussed.Results show that the proper manner of these interactions can reduce the strength of leakage vortex,and we can acquire the low loss and high efficiency.

关 键 词：涡轮 平面叶栅 尾迹 

分 类 号：O357.5[理学—流体力学]