弯叶片对大展弦比扩压叶栅角区分离控制机理研究(一)——弯叶片对角区分离起始和发展的影响  

Study on the Corner Separation Controlling Mechanism of the Bowed Blade for a High Aspect Ratio Compressor Cascade Part Ⅰ:The Effects on the Corner Separation Start and Development of the Bowed Blade

作　　者：杜鑫[1] 王松涛[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《汽轮机技术》2010年第3期195-198,201,共5页Turbine Technology

摘　　要：以大展弦比扩压叶栅为研究对象,根据角区分离流动特点提出了以角区分离起始点和吸力面回流区边界作为描述角区分离的关键参数,研究了角区分离起始点和吸力面回流区边界随弯角、弯高的变化规律,揭示了弯叶片对角区分离起始和发展的影响。In this paper, a high aspect ratio compressor cascade has been studied. Based on the flow characteristics the comer separation start point and the reflect flow boundary on the suction surface are proposed to be the key describing parameters of the comer separation flow in this paper. By way of comparison and analysis of the changing pattern with bowed angle and bowed height of the comer separation start point and the reflect flow boundary on the suction surface the corner separation start and development controlling mechanism of the bowed blade is disclosed.

关 键 词：扩压叶栅 大展弦比 角区分离 弯叶片 

分 类 号：TK474.81[动力工程及工程热物理—动力机械及工程]