Wetting condition in diffuse interface simulations of contact line motion
Wetting condition in diffuse interface simulations of contact line motion
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DOI：
10.1103/physreve.75.046708
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发表时间：
2007-04-01
影响因子：
2.4
通讯作者：
Spelt, Peter D. M.
中科院分区：
文献类型：
--
作者：
Ding, Hang;Spelt, Peter D. M.
研究了扩散界面方法在模拟具有运动接触线的双流体流动中的润湿条件。使用表面能方法的现有方法不能产生与接触角的规定值一致的界面斜率。提出了一种几何公式，可以得到规定的接触角。给出了切变流中由于毛细管力和液滴在固体衬底上的运动而引起的轴对称液滴扩散的试验结果。
We investigate the wetting condition for diffuse-interface methods in the simulation of two-fluid flows with moving contact lines. A current method, which uses a surface-energy approach, is shown not to result in a slope of the interface that is consistent with the prescribed value of the contact angle. A geometric formulation is proposed that does result in the prescribed contact angle. Test results are presented for the axisymmetric droplet spreading due to the capillary force and the motion of a droplet on a solid substrate in a shear flow.