极小展弦比后加载叶栅气动特性三维数值分析和实验  

3D Numerical Simulation and Experimental Study on Aerodynamic Characteristics of Ultra Low-Aspect Ratio Cascades of After-Loaded Type

作　　者：王玉璋[1] 丰镇平[2] 赵亚芳[2] 王永泓[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030 [2]西安交通大学能源与动力工程学院,西安710049

出　　处：《上海交通大学学报》2003年第7期1031-1034,共4页Journal of Shanghai Jiaotong University

基　　金：教育部博士学科点专项科研基金资助 (980 69819)

摘　　要：以数值手段分析了极小展弦比下后加载透平叶栅内的定常 3D粘性流动及损失 ,并对该透平叶栅在不同出口 Ma和进气角下进行平面叶栅吹风实验 .数值方法采用 3D可压缩粘性流动压力修正算法求解 N- S方程及 Baldwing- Lomax代数湍流模型 .通过数值计算分析和平面叶栅吹风实验研究表明 ,后加载技术应用于极小展弦比叶栅中 ,可以起到控制The internal flow performance of an after-loaded turbine cascade with different ultra low-aspect ratios was studied by means of 3D numerical simulation and experimental investigation at different Mach numbers and inlet angles. A pressure based numerical method combined with the Baldwing-Lomax turbulence model was adopted in solving 3D Navier-Stokes equations. The calculation results and experimental results show that 3D cascade losses and secondary flow losses in after-loaded turbine cascade with ultra low-aspect ratio can be controlled and greatly reduced.

关 键 词：后加载叶栅 二次流损失 数值分析 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]