Dynamics and stability of sessile drops with contact points

Dynamics and stability of sessile drops with contact points
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带接触点的固着液滴的动力学和稳定性

DOI:
10.1016/j.jde.2020.10.012
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发表时间:
2021
影响因子:
2.4
通讯作者:
Wu, Lei
Wu, Lei
中科院分区:
数学2区
文献类型:
--
作者:
Tice, Ian;Wu, Lei

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为了研究流体中接触线的稳定性,我们考虑了不可压缩粘性斯托克斯流体滴在重力影响下在一维平坦表面上方演化的动力学。这是一个自由边界问题:表面流体与上方空气(由普通流体建模)之间的界面可以自由移动并受到毛细管力。流体、空气和固体容器壁相遇的三相界面称为接触点,自由界面与平坦表面之间形成的角度称为接触角。我们考虑这个问题的模型,该模型允许完全动态的接触点和角度。我们为模型开发了一个先验估计方案,然后我们可以证明,对于足够接近平衡的初始数据,该模型允许全局解以指数方式快速衰减到移动平衡。
In an effort to study the stability of contact lines in fluids, we consider the dynamics of a drop of incompressible viscous Stokes fluid evolving above a one-dimensional flat surface under the influence of gravity. This is a free boundary problem: the interface between the fluid on the surface and the air above (modeled by a trivial fluid) is free to move and experiences capillary forces. The three-phase interface where the fluid, air, and solid vessel wall meet is known as a contact point, and the angle formed between the free interface and the flat surface is called the contact angle. We consider a model of this problem that allows for fully dynamic contact points and angles. We develop a scheme of a priori estimates for the model, which then allows us to show that for initial data sufficiently close to equilibrium, the model admits global solutions that decay to a shifted equilibrium exponentially fast.
接触角π 2 稳态不可压缩流自由边界问题
DOI: 10.1016/j.jde.2005.06.014
发表时间: 2005
影响因子: 2.4
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