具有浇注缺陷的扰流柱流动与换热特性的对比分析  

The Analysis of Flow and Heating Transfer Characteristic for the Pin-fin with Pouring Defect

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

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,湖南株洲412002

出　　处：《工业加热》2010年第6期23-26,共4页Industrial Heating

基　　金：中国航空动力机械研究所资助项目(B08006)

摘　　要：采用数值模拟方法对两种具有浇注缺陷的扰流柱通道的换热和流动阻力特性进行了模拟,重点研究了断裂结构和束腰结构扰流柱的影响,并与完整扰流柱通道进行了比较。结果表明所研究的扰流柱通道与完整扰流柱通道相比,其换热效果和压力损失系数相差不大。具有断裂结构和束腰结构的扰流柱减轻了叶片的重量,降低加工精度,对通道的流动和换热特性的影响不大,甚至具有一定的强化传热作用。Numerical simulation was used to investigate the two-channel of flow and heating transfer characteristics for the pin-fin with pouring defect. The focus was on the effect of the parted pin-fins and the waist-shaped pin-fins, and it made comparison with the passage with complete pin-fin arrays. The results showed there was little difference on heat transfer effect and pressure loss coefficient. The pin-fins with parted structure and waist-shaped structure reduced the weight of the blade and processing accuracy, but little influence on the flow and heat transfer characteristics, there was even some extend enhancement in the heat transfer.

关 键 词：扰流柱 传热 压力损失 浇注 

分 类 号：TK124[动力工程及工程热物理—工程热物理]