断裂结构扰流柱通道内的传热和阻力特性  

HEAT TRANSFER AND CHARACTERISTICS OF PRESSURE DROP IN WEDGE PASSAGE WITH PARTED PIN-FIN ARRAYS

作　　者：徐青[1] 黄小新[1] 赵广超[1] 李军[1] 凌长明[1] 赵冬梅[2] 张正国[3] 

机构地区：[1]广东海洋大学工程学院,广东湛江524025 [2]中国航空动力机械研究所,湖南洙洲412002 [3]华南理工大学传热重点实验室,广东广州510640

出　　处：《工程热物理学报》2009年第2期261-263,共3页Journal of Engineering Thermophysics

基　　金：中国航空动力机械研究所资助项目(No．B08006);传热强化与过程节能教育部重点实验室资助(No．KF 0606)

摘　　要：本文对具有断裂结构扰流柱的涡轮叶片尾缘楔型通道的流动与换热过程进行了实验研究。Reynolds数取值范围为3000～13500,随着Reynolds数的增加,断裂扰流柱通道的换热能力增强;同时选取了8种断裂距离组合进行了实验研究,结果表明随着断裂距离的增大,通道换热能力减弱;另外还讨论了不同的扰流柱断裂分布区域对流动与换热的影响。The heat transfer and characteristics of the fluid flow in the duct of the trailing edge of the turbine blade with parted pin-fin arrays were experimentally investigated. The heat transfer ability of the pin-fin arrays increased with the increasing of the Reynolds number within the range of Reynolds numbers from 3000 to 15000. The experimental researches were carried out with 8 kinds of distance of parted-space combinations. The results show that the larger the distance of parted-space, the less the Nusselt number. The experimental researches were also carried out in the duct with different distributions of the parted pin-fin arrays to study the effect of the distribution on fluid flow and heat transfer.

关 键 词：叶片 尾缘 断裂结构扰流柱 强化传热 

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]