C3X叶片双曲率槽道气膜冷却数值研究  

Numerical Investigations on Film Cooling Performances of the Double-Curvature Trench in C3X Vane

作　　者：张润生 罗臣丰 邢江江 周乐平[1] 杜小泽[1] ZHANG Run-Sheng;LUO Chen-Feng;XING Jiang-Jiang;ZHOU Le-Ping;DU Xiao-Ze(Key Laboratory of Power Station Energy Transfer Conversion and System(North China Electric Power University),Ministry of Education,School of Energy,Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学能源动力与机械工程学院暨电站能量传递转化与系统教育部重点实验室,北京102206

出　　处：《工程热物理学报》2022年第4期945-949,共5页Journal of Engineering Thermophysics

基　　金：国家科技重大专项课题(No.2017-III-0003-0027)。

摘　　要：本文采用SST湍流模型和雷诺时均方法(RANS),针对传统横向槽道进行了具有双曲率边沿的设计并对其气膜冷却性能在C3X叶片模型上进行了数值模拟,获得了不同吹风比时传统横向槽道孔,双曲率槽道孔和无槽道孔的气膜冷却效率。结果表明,吹风比为0.5、1.0、1.5时冷却效率呈现出双曲率槽道孔高于传统横向槽道孔,而后者又高于无槽道孔的规律。In this paper,the double-curvature lip is designed for the traditional transverse trench.The Reynolds averaged Navier Stokes(RANS)method with the SST turbulence model is used to simulate the film cooling performances of the trench in C3X vane.The film cooling effectiveness of the traditional transverse trench,the double-curvature trench and the hole without trench at different blowing ratio is obtained.The results show that when the blowing ratio M=0.5,1.0 and 1.5,the cooling effectiveness of the double-curvature trench is higher than that of the traditional transverse trench,and the traditional transverse trench is higher than that of the hole without trench.

关 键 词：气膜冷却 C3X叶片 双曲率槽道 吹风比 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]