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.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
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)
关键词
叶片
尾缘
断裂结构扰流柱
强化传热
turbine blade
trailing edge
parted pin-fin
augmented heat transfer
