多斜孔壁与阶梯多斜孔壁流动与换热特性数值比较  

Numerical Investigation of Flow and Heat Transfer Characteristics of Effusion Plates with Stage Holes

作　　者：赵旭洋[1] 张勃[1] 吉洪湖[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《重庆理工大学学报（自然科学）》2013年第1期32-36,共5页Journal of Chongqing University of Technology：Natural Science

摘　　要：将阶梯孔结构引入燃烧室多斜孔壁冷却结构中,形成阶梯多斜孔壁冷却结构,在多斜孔壁内部形成冲击冷却。研究表明:引入阶梯孔结构后,在阶梯孔台阶面处产生冲击冷却,斜孔内壁对流换热量增大,壁温明显降低;台阶的存在产生明显节流效果,流量系数减小,冷却流量降低。Numerical simulation is adopted for the simplified laminated plate with effusion hole. The results have shown that the temperature of hot side was cooler than the plate with film hole, the heat flux in the hole was strengthened, and the flow rate in the hole was reduced for the step surface.

关 键 词：阶梯孔 强化换热 多斜孔壁 流量系数 冲击冷却 

分 类 号：TK124[动力工程及工程热物理—工程热物理]