Ding Hang, Spelt Peter D M
Department of Chemical Engineering, Imperial College London, SW7 2AZ, United Kingdom.
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Apr;75(4 Pt 2):046708. doi: 10.1103/PhysRevE.75.046708. Epub 2007 Apr 27.
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.
我们研究了在具有移动接触线的双流体流动模拟中扩散界面方法的润湿条件。一种使用表面能方法的现有方法被证明不会产生与规定接触角值一致的界面斜率。我们提出了一种几何公式，它确实能得到规定的接触角。给出了轴对称液滴在毛细力作用下铺展以及液滴在剪切流中在固体基底上运动的测试结果。
