分支孔结构对气膜冷却效率的影响研究  

Impact Research of Branch Hole Structure on Film Cooling Effectiveness

作　　者：赵占明 翟郑佳 刘超[1] 朱恒宣[1] 王进[1] ZHAO Zhanming;ZHAI Zhengjia;LIU Chao;ZHU Hengxuan;WANG Jin(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401

出　　处：《兵器装备工程学报》2020年第2期216-220,共5页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(51606059);河北省自然科学基金项目(E2016202266).

摘　　要：在不同支孔角度下分别对整出分支孔和分出分支孔进行了数值模拟。结果表明,随着支孔角度的增大,来自两种分支孔结构的冷却气流在下游壁面上的覆盖面积均增大;在支孔角度相同的情况下,将两种分支孔结构的下游壁面气膜冷却效率进行对比可知,在壁面中心线上,整出分支孔结构提供了更好的冷却保护效果,在壁面两侧,分出分支孔具有更高的气膜冷却效率。In order to compare the effect of two branch hole structures on the wall film cooling effectiveness,numerical simulations were carried out for the integrated branch hole and for the separated branch hole under different angles.The results show that with the increase of the angle of the branch holes,the coverage area on the downstream wall of cooling air from the two branch hole structure increased gradually.Compared with the film cooling effectiveness with the same angle of the branch hole,the integrated branch hole provides better film cooling effectiveness on the wall centerline,and the separated branch hole has higher film cooling effectiveness on both sides of the wall surface.

关 键 词：燃气轮机 气膜冷却 孔结构 支孔角度 计算流体力学 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]