矩形弯曲冷却孔绕流的数值研究  

NUMERICAL INVESTIGATION OF THE FLOW OVER CURVED RECTANGULAR COOLING HOLE

作　　者：梁俊宇[1] 康顺[1] 马丽[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《工程热物理学报》2010年第2期251-255,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50876028)

摘　　要：本文以平板矩形孔为对象,利用商业软件NUMECA的Fine/Turbo求解器,并采用Spalart-Allmaras一方程湍流模型,在定常假设的条件下,通过数值模拟得到不同速度比时直方孔和弯曲方孔附近的三维流动结构,探讨冷却孔弯曲对减弱肾形的效果。同时讨论了肾形涡发展演变的拓扑结构。This paper focuses on the cross flow over a rectangular hole in flat plate.Under the steady flow assumption,the 3D flow structures nearby straight and curved holes at different velocity ratios are numerically studied by use of the Fine/Turbo package from NUMECA,with Spalart-Allmaras one equation model as a closure.The effect of hole shapes（straight and/or curved） on weakening of the kidney vortex is analyzed.In addition,topology of the kidney vortex structure evolving along the streamwise direction is discussed.

关 键 词：气膜冷却 旋涡运动 数值模拟 

分 类 号：TK474[动力工程及工程热物理—动力机械及工程]