气膜和冲击复合冷却结构耦合传热数值研究  

Numerical Investigation of Conjugate Heat Transfer for Combined Film and Impingement Cooling

作　　者：张鹏[1,2] 付经伦 刘建军[1] 

机构地区：[1]中国科学院工程热物理所,北京100190 [2]中国科学院大学,北京100190

出　　处：《工程热物理学报》2015年第11期2352-2355,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目资助(No.51336007)

摘　　要：本文采用数值方法研究了气膜和冲击复合冷却结构的耦合传热和综合冷效。复合冷却平板模型布置有两个交错气膜孔和若干排冲击孔,气膜孔和冲击孔均采用圆柱孔型。分别研究了吹风比和冷气量分配对综合冷效、流场结构和对流换热特性等的影响规律,结果表明:复合冷却综合冷效明显受到吹风比影响;适当调节冷气量的分配,能够明显提高综合冷效。Conjugate heat transfer CFD studies have been undertaken for overall cooling effectiveness of a flat plate with combined film and impingement cooling.The combined cooling plate had an arrangement of two staggered cylindrical film holes and several rows of cylindrical injection holes.The effects of blowing ratio and cooling air distribution on the overall cooling effectiveness,flow structure and convective heat transfer characteristics were investigated.The results show that the overall cooling effectiveness for the combined cooling flat plate is obviously influenced by blowing ratio.Moreover,proper adjustment of the cooling air distribution can significantly improve the overall cooling effectiveness.

关 键 词：气膜冷却 冲击冷却 复合冷却 耦合传热 数值计算 

分 类 号：TK05[动力工程及工程热物理]