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Freezing of axisymmetric liquid bridges
Physical Review Fluids ( IF 2.7 ) Pub Date : 
Weiqi Huang, Xinping Zhou

The solidification of liquid bridge plays an important role in many applications. Previous research on droplet solidification has found that supercooling and gravity have certain effects on physical properties and droplet shape during solidification. In this paper, axisymmetric liquid bridge solidification is studied from theory and experiment. A fixed contact line model, considering both the effects of supercooling and gravity, is developed to describe the freezing behavior of liquid bridge. In the experiment, two horizontal cold coaxial discs are cooled simultaneously, and a liquid bridge starts freezing from the contact surfaces with the discs and finally forms an asymmetric ice ring in the middle. A correlation expression of the three-phase contact line height evolution determined by theory and experiment is developed. Comparisons between the calculation and experiment are made, and a good agreement is obtained in the first freezing stage. Melting experiment of frozen liquid bridge is also conducted, and a suspension phenomenon of ice is observed, which is completely different from the melting of droplets.

中文翻译:

轴对称液桥冻结

液桥的固化在许多应用中起着重要作用。先前对液滴凝固的研究发现,过冷和重力对凝固过程中的物理性质和液滴形状有一定的影响。本文从理论和实验的角度研究了轴对称液桥的凝固过程。建立了考虑过冷和重力影响的固定接触线模型,以描述液桥的冻结行为。在实验中,两个水平的冷同轴圆盘同时被冷却,并且液桥从与圆盘的接触表面开始冻结,最后在中间形成一个不对称的冰环。建立了理论和实验确定的三相接触线高度演变的相关表达式。在计算和实验之间进行了比较,并在第一个冷冻阶段获得了良好的一致性。还进行了冷冻液桥的融化实验,观察到冰的悬浮现象,这与液滴的融化完全不同。
更新日期:2020-09-16
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