南京航空航天大学学报（英文版）2023，Vol.40Issue(6)：714-726,13.DOI:10.16356/j.1005-1120.2023.06.008
双液滴对不同润湿性冷表面连续撞击的数值模拟
Numerical Simulation of Double-Droplet Continuously Impact on Cold Surface with Different Wettability
摘要
Abstract
The numerical simulation method combining solidification/melting model and volume of fluid(VOF)model is used to study the freezing behavior of double-droplet continuously impacting cold surfaces with varying wettability under low-velocity conditions.The droplet spreading and phase transition processes under two contact modes(diffusion contact and contraction contact)are compared.The simulation results indicate that the coalescence of droplets has a significant impact on their morphology.When two droplets continuously impact the hydrophilic surface,the maximum spreading factor of diffusion contact increases by 26%—38%compared with that of a single droplet impact,and the maximum spreading factor of contraction contact increases by 15%—30%compared with that of a single droplet impact.On superhydrophobic surfaces,the maximum spreading coefficient difference between single and double-droplet impacts is less than 2%,which can be ignored.In addition,an analysis is conducted on the collision between double droplets and superhydrophobic surfaces at low temperatures,and the impact patterns of complete rebound,partial rebound,and full adhesion on droplet aggregation and solidification processes under different contact modes are obtained.关键词
双液滴/结冰/凝固融化模型/VOF模型/超疏水表面Key words
double-droplet/freezing behavior/solidification/melting model/VOF model/superhydrophobic surface分类
航空航天引用本文复制引用
胡安杰,袁侨伟,郭凯月,刘东..双液滴对不同润湿性冷表面连续撞击的数值模拟[J].南京航空航天大学学报（英文版）,2023,40(6):714-726,13.基金项目
This work was supported by the Open Fund of Key Laboratory of Icing and Anti/De-icing(No.IADL20190311). （No.IADL20190311）
