双涵道中介机匣轮毂端壁构型设计及仿真分析  

Configuration Design and Simulation Analysis of Double Culvert Mediator Case Hub Endwall

作　　者：富裕 雷雨冰[1] FU Yu;LEI Yubing(College of Energy and Power Engineering,Nanjing University of Aeronautics And Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械制造与自动化》2023年第4期120-122,127,共4页Machine Building & Automation

基　　金：国家科技重大专项(J2019-II-0007-0027)。

摘　　要：针对径向落差比ΔR/L为0.38的双涵道中介机匣通道内二次流损失的问题,通过改变轮毂局部型面补偿支板带来面积堵塞的构型设计,提高了流场的品质。结果表明:设计方案减小了通道内二次流带来的损失,使中介机匣内涵道总压恢复系数提高到0.9939,内涵道总压损失系数降低了9.05%。For the secondary flow loss in the double-channel intermediate casing with radial drop ratioΔR/L of 0.38,change is made on the configuration design of the area blockage caused by the local profile of the hub to compensate the branch plate,which has improved the quality of the flow field.The numerical results show that the design scheme reduces the loss caused by secondary flow in the channel,and increases the total pressure recovery coefficient of the inner channel to 0.9939,and the total pressure loss coefficient of the inner channel is reduced by 9.05%.

关 键 词：双涵道中介机匣 径向落差比 轮毂端壁 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]