多斜孔壁冷却方式小孔内对流换热的数值模拟  

Convective heat transfer simulation in holes of inclined multihole wall film cooling

作　　者：许全宏[1] 李涛[1] 薛航[2] 林宇震[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院航空发动机气动热力重点实验室,北京100191 [2]中国航空技术进出口总公司民机市场部,北京100101

出　　处：《航空动力学报》2009年第5期957-962,共6页Journal of Aerospace Power

摘　　要：采用数值计算的方法研究了多斜孔壁冷却方式小孔内对流换热的特性.数值分析采用了只考虑流体区域对流换热和考虑流体与固体间流固耦合传热共两种方法.计算结果表明:流固耦合传热法更能反映小孔内实际的换热特性;小孔进口处的Nu数最大,且随着孔内雷诺数的变化,孔进口区对孔内换热的影响也不同.Characteristics of convective heat transfer in holes of inclined multihole wall were investigated numerically by two different ways.One was focused on the purely aerothermal effects of the cooling flow,and the other one on the conjugate heat transfer.The results reveal that the conjugate heat transfer simulation is more accurate in reflecting convective heat transfer in holes.The results also show that the Nusselt number at the entrance of the holes is the maximum,and the influence of the entrance on the lo...

关 键 词：倾斜孔 冷却 流固耦合传热 数值模拟 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]