在高负荷涡轮叶栅中应用弯叶片控制流动分离的实验研究  

A NUMERICAL INVESTIGATION OF APPLICATION OF BOWED BLADE TO CONTROL FLOW SEPARATION ON HIGHLY LOADED TURBINE CASCADES

作　　者：谭春青[1] 张华良[1] 董学智[1] 赵洪雷[1] 山本孝正 

机构地区：[1]中科院工程热物理研究所,北京100190 [2]日本宇宙航空研究开发机构

出　　处：《工程热物理学报》2009年第9期1467-1471,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.10577019)

摘　　要：本文选择叶型折转角为113°和160°的两种高负荷涡轮平面叶栅,分别开展了直叶栅(STR)和正/反弯曲叶栅的流场测量和流动显示研究,讨论了叶片弯曲对壁面流谱和流动损失的影响。实验结果表明:当叶型折转角为113°时,适当的正弯叶片(DHP)可以减少叶栅流动损失;当叶型折转角为160°时,适当的反弯叶片(DHN)能提高叶栅气动性能。A experimental investigation was performed for two different turbine cascades with high-turning angles of 113° and 160°. The effect of bowed blade on flow pattern as well as flow loss was discussed through flow field measurement and flow visualization. The result shows that a appropriate positive bowed blade can reduce the flow loss for the cascade with a turning angle of 113°. And that a proper negative bowed blade can improve the aerodynamic performance for the cascade with a turning angle of 160°.

关 键 词：高负荷 折转角 流动分离 弯叶片 

分 类 号：TK474.4[动力工程及工程热物理—动力机械及工程]