滴状冷凝过程中液滴接触角对热流密度的影响  

Influence of Contact Angle on Heat Flux in Dropwise Condensation

作　　者：梅茂飞[1] 胡峰[1] 韩崇[1] 孙言[1] 刘冬冬[1] 

机构地区：[1]徐州工程学院数学与物理科学学院,江苏徐州221018

出　　处：《徐州工程学院学报（自然科学版）》2017年第4期50-54,共5页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：国家自然科学青年基金项目(51506184)

摘　　要：为研究滴状冷凝传热过程中液滴接触角对传热效果的影响,根据单个的热阻模型,分别给出单个液滴热交换率和热流密度的表达式,以及单个液滴半径与生长时间之间的隐式关系.同时,根据该隐式关系,利用计算机模拟滴状冷凝液滴生长过程.模拟结果表明:接触角越大,冷凝表面的热流密度越小,但热流密度对接触角的依赖程度却逐渐减弱.The influence of the contact angle between droplets and surfaces on the heat flux in dropwise condensation was studied in this paper.Based on the heat resistance model of a single droplet,two expressions of heat transfer rate and heat flux were derived.Meanwhile,an implicit relation between the droplet radius and growth time was proposed.Computer was used to simulate the growth process of droplets on surface.The simulation results show that the larger the contact angle is,the smaller the heat flux is on the condensing surface,but the dependence of the heat flux on the contact angle is gradually weakened.

关 键 词：滴状冷凝 模拟 热流密度 接触角 

分 类 号：TK124[动力工程及工程热物理—工程热物理]