次声频脉动流横掠圆柱体传热实验研究

工程热物理学报 , 2014, 35(2): 342-345.

次声频脉动流横掠圆柱体传热实验研究

郑友取 ^1, , 李国能 ^2, , 胡桂林 ^3, , 泮国荣 ^4,

1.浙江科技学院能源与环境系统工程系,浙江杭州310023

2.浙江科技学院能源与环境系统工程系,浙江杭州310023

3.浙江科技学院能源与环境系统工程系,浙江杭州310023

4.浙江科技学院能源与环境系统工程系,浙江杭州310023

基金项目: 国家自然科学基金资助项目(51106140) 浙江省自然科学基金资助项目(Z1110695)

关键词：对流传热 , 脉动流 , 次声频 , 圆柱体

Experimental Study on Heat Transfer of a Cylinder in Pulsating Cross-Flows With Infrasonic Frequency

ZHENG You-Qu ^1, , LI Guo-Neng ^2, , HU Gui-Lin ^3, , PAN Guo-Rong ^4,

1.浙江科技学院能源与环境系统工程系,浙江杭州310023

2.浙江科技学院能源与环境系统工程系,浙江杭州310023

3.浙江科技学院能源与环境系统工程系,浙江杭州310023

4.浙江科技学院能源与环境系统工程系,浙江杭州310023

Keywords： convection heat transfer , pulsating flow , infrasonic frequency , cylinder

为研究次声频脉动流中圆柱体对流换热的特性,搭建了脉动流强化传热实验台架,研究了不同脉动频率(f=6～20 Hz)的脉动流横掠圆柱体的对流换热问题,脉动波的有效压力振幅prms固定为22 Pa.结果表明;低频小振幅的脉动流横掠热圆柱体时,对流换热相对努塞尔数随着频率的降低线性增大,最大值可达4.0以上;辐射热流率占总热流率的比例随着频率的降低而呈指数下降.

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次声频脉动流横掠圆柱体传热实验研究

Experimental Study on Heat Transfer of a Cylinder in Pulsating Cross-Flows With Infrasonic Frequency

参考文献