Motion of a drop on a solid surface due to a wettability gradient
Motion of a drop on a solid surface due to a wettability gradient
复制标题
DOI：
10.1021/la051943i
复制
发表时间：
2005-12-06
期刊：
影响因子：
3.9
通讯作者：
McLaughlin, JB
中科院分区：
文献类型：
--
作者：
Subramanian, RS;Moumen, N;McLaughlin, JB
从两个近似的解析解得到的流体动力所经历的球帽滴在固体表面上移动，并用于预测的准稳态速度的下降的润湿性梯度。一种解决方案是基于近似的形状的下降作为一个集合的楔形，另一个是基于润滑理论。此外，渐近结果从两个小接触角的近似，以及润滑理论的渐近结果是好的，当滴的长度尺度是大的滑动长度相比，给出。水动力的结果也可以用来预测准稳态速度下降的倾斜。
The hydrodynamic force experienced by a spherical-cap drop moving on a solid surface is obtained from two approximate analytical solutions and used to predict the quasi-steady speed of the drop in a wettability gradient. One solution is based on approximation of the shape of the drop as a collection of wedges, and the other is based on lubrication theory. Also, asymptotic results from both approximations for small contact angles, as well as an asymptotic result from lubrication theory that is good when the length scale of the drop is large compared with the slip length, are given. The results for the hydrodynamic force also can be used to predict the quasi-steady speed of a drop sliding down an incline.