An Improved Treatment on the Apparent Contact Angle of a Single-Bubble in Consideration of Microlayer for Simulations of Nucleate Pool Boiling  

作　　者：CHEN Zhihao WU Feifei UTAKA Yoshio CHEN Ping LIANG Chen 

机构地区：[1]School of Mechanical Engineering,Tianjin University,Tianjin 300350,China [2]Key Laboratory of Efficient Utilization of Low and Medium Grade Energy(Tianjin University),Ministry of Education,Tianjin 300350,China [3]Department of Mechanical Engineering,Graduate School of Engineering,Kyushu University,Fukuoka 819-0395,Japan [4]National New Energy Vehicle Technology Innovation Center,Beijing 100176,China [5]Beijing Automotive Technology Center,BAIC Group,Beijing 101300,China

出　　处：《Journal of Thermal Science》2021年第6期1951-1959,共9页热科学学报（英文版）

基　　金：partly supported by the National Key Research and Development Program of China(No.2018YFB0105405);the National Natural Science Foundation of China(No.52076146);the Open Project of State Key Laboratory of Clean Energy Utilization of Zhejiang University(ZJUCEU2018013).

摘　　要：Numerical simulation of single-bubble growth behavior during nucleate pool boiling was developed based on the volume of fluid method considering the thin liquid layer under the bubble(microlayer).However,the experimental values of apparent contact angle(the small region connecting the microlayer and bulk liquid)are crucial for the simulations.Reliance on experimental results limited the further application of such numerical method.In this study,a new method calculating the force balance,used to determine the interface shape near the apparent contact angle,was proposed instead of using the experimental values of the apparent contact angle.As a result,the good agreement was shown between the simulation results obtained based on the new and previous numerical methods.The simulation results were also in consistent with the experimental results.It can be concluded that the single-bubble behavior,including the heat transfer characteristics,during nucleate pool boiling can be simulated based on the proposed method.

关 键 词：numerical simulation nucleate pool boiling bubble growth MICROLAYER surface tension VOF method 

分 类 号：TK124[动力工程及工程热物理—工程热物理]