流量分配对尾缘通道流动换热特性的影响  

Effect of flow distribution on flow and heat transfer in the trailing edge channel

作　　者：潘炳华 PAN Bing-hua(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)

机构地区：[1]中国航发四川燃气涡轮研究院,成都610500

出　　处：《燃气涡轮试验与研究》2017年第2期45-50,共6页Gas Turbine Experiment and Research

摘　　要：采用数值模拟方法,研究了不同进气比条件下双向进气叶片尾缘通道的流动与换热特性。结果表明,整个尾缘通道的全局平均换热强度随着进气比的增加而增大。小进气比情况下,尾缝出口流量沿径向分布较均匀,整个通道的对流换热都较弱,其中中间隔板附近对流换热最弱。大进气比情况下,尾缝出口流量分布沿径向变化较大,在通道顶部区域分布较多,通道顶部区域对流换热最强,中间隔板附近对流换热有所改善。Numerical methods are used to investigate the flow and heat transfer characteristics of trailing edge channel with double-inlet at different intake ratio.The results show that the increase of the intake ratio is helpful to improve the global average heat transfer capacity of trailing edge channel.With small air intake ratio,the radial mass flow distribution at the channel exit is uniform and the global heat transfer capacity of channel is very weak,especially the area around clapboard middle part.When the air intake ratio is more than0.8,the radial mass flow distribution changes greatly,and heat transfer of channel tip is the strongest,furthermore heat transfer of the area around clapboard middle part is improved.

关 键 词：航空发动机 涡轮 转子叶片 双向进气 扰流柱 隔板 数值计算 

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]