Instability of the Contact Line between Three Fluid Phases during Mass Transfer Processes.
Instability of the Contact Line between Three Fluid Phases during Mass Transfer Processes.
复制标题
传质过程中三相流体相间接触线的不稳定性。
DOI：
10.1006/jcis.2000.6858
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发表时间：
2000
影响因子：
9.9
通讯作者：
Weh
中科院分区：
文献类型：
--
作者：
Weh
两种液体和气相之间的可移动接触线对力平衡中的小扰动敏感地作出反应。接触线和相邻界面的形状由界面和表面张力、接触角、密度差（静水压力）和拉普拉斯毛细管压力决定。当这些变化时，三相接触线可能变形，甚至变得不稳定。界面张力和表面张力取决于浓度和温度。在质量传输过程（浓度变化）中，可以观察到接触线的各种形式的不稳定性：-圆形接触线的振荡（规则的膨胀和减少）; -再次迅速消失的单一变形（凸起）; -沿边界线沿着运行的变形（凸起）; -具有不同模式的周期性产生和阻尼变形。三相接触线的行为对于聚结过程和液体表面上的自发乳化具有实际重要性。版权所有2000学术出版社。
The movable contact line between two liquids and a gas phase sensitively reacts to small disturbances in the force equilibrium. The shape of the contact line and the adjoining interfaces is determined by the interface and surface tensions, the contact angles, the density differences (hydrostatic pressure), and the Laplace capillary pressure. When these change, the three-phase contact line can deform and even become unstable. Interface and surface tension depend on the concentration and temperature. During mass transport processes (concentration changes) various forms of the instability of the contact line can be observed: -Oscillations of a circular contact line (regular expansion and reduction); -Single deformations (bulges) which quickly disappear again; -Deformations (bulges) which run along the boundary line; -Periodically generated and damped deformations with different modes. The behavior of the three-phase contact line is of practical importance for coalescence processes and for spontaneous emulsification on liquid surfaces. Copyright 2000 Academic Press.