Simple hydrodynamic model of fast-mode kinetics in surface-mediated fluid phase separation.
Simple hydrodynamic model of fast-mode kinetics in surface-mediated fluid phase separation.
复制标题
表面介导的流体相分离中快速模式动力学的简单流体动力学模型。
DOI：
10.1103/physreve.54.1709
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Tanaka
中科院分区：
文献类型：
--
作者：
Tanaka
我们在这里提出了一个简单的物理模型的快速表面域生长的${\mathit{t}}^{3/2}$代数法观察到的表面介导的对称流体混合物的相分离。这种不寻常的快速粗化可能是由一个更小的流体相通过双连续流体管在二维固体表面上的流体动力学扩散引起的。随着淬火深度的增加，增长指数从1到3/2的逐渐变化可以解释为润湿液滴从半球到圆盘的形状转变，这是由润湿能力随着淬火深度的增加引起的。并讨论了高速增长模式在后期的减缓。这种减慢很可能是由畴生长速度不能超过粘性耗散极限速度的约束引起的。\textcopyright{} 1996美国物理学会。
We propose here a simple physical model of the fast surface domain growth with the ${\mathit{t}}^{3/2}$ algebraic law observed for surface-mediated phase separation of symmetric fluid mixtures. This unusually fast coarsening is likely caused by the hydrodynamic spreading of a more wettable fluid phase on a two-dimensional solid surface via bicontinuous fluid tubes. The gradual change in the growth exponent from 1 to 3/2 with an increase in the quench depth can likely be explained by the shape transition of wetting droplets from hemisphere to disk, which is induced by the increase in the wetting power with the quench depth. We also discuss the slowing down of the fast growth mode in the late stage. This slowing down is likely caused by the constraint that domain growth velocity cannot exceed the viscous-dissipation-limit velocity. \textcopyright{} 1996 The American Physical Society.