矩形冷却孔附近流动的数值研究  

NUMERICAL STUDY OF FLOW STRUCTURE NEARBY RECTANGULAR COOLING HOLES

作　　者：康顺[1] 马丽[1] 陈党慧[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》2008年第1期28-31,共4页Journal of Engineering Thermophysics

摘　　要：为了深刻认识冷却孔附近的流动结构和旋涡生成机理,本文数值研究了平板上不同矩形射流孔附近的局部流场。在给定横向流速和吹风比条件下,对不同长宽比的矩形垂直射流孔附近区域三维定常流动的流场结构进行了研究。并分析了孔附近各种主要涡旋生成的机理。In order to have an insight into the flow structure and the mechanism of vortex generation nearby cooling holes, the localized flow structure of rectangular jet holes perpendicular to a flat plate was numerically investigated. Under given cross flow speed and blowing ratios, study of the 3D steady flow nearby the hole exit has been carried out for three different aspect ratios of the hole exit. Generation mechanisms of the various vortices were analyzed.

关 键 词：横流中的射流 冷却孔 旋涡 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]