NUMERICAL SIMULATION OF WATER DROPLET FREEZING PROCESS ON COLD SURFACE

被引：0

作者：

Yao, Yina ^{[1
]}

Li, Cong ^{[1
]}

Tao, Zhenxiang ^{[1
]}

Yang, Rui ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Engn Phys, Inst Publ Safety Res, Beijing 100084, Peoples R China

来源：

PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2017 VOL 8 | 2018年

基金：

中国国家自然科学基金;

关键词：

numerical modelling; freezing time; contact angle; water droplet; SOLIDIFICATION; SUBSTRATE; COATINGS; IMPACT;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

It is significant to clearly understand the freezing process of water droplets on a cold substrate for the prevention of ice accretion. In this study, a three-dimensional numerical model including an extended phase change method was developed on OpenFOAM platform to simulate the freezing of static water droplets on cooled solid substrates. The predicted freezing process was compared with numerical results obtained by others. Good agreements were obtained and our numerical model results in faster convergence compared to the traditional phase change method. The effects of surface wettability on freezing time and freezing velocity were numerically investigated. The results show that the freezing time presents a positive relationship with contact angle due to the smaller contact area with higher contact angle, which agrees well with the theoretical analysis. Besides, the empirical relation between freezing time and contact angle were obtained.

引用

页数：8

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