) Abstract: Droplets on a hydorphobic solid surface patterned with microstructures can exhibit the composite Cassie-Baxter(CB) state or the wetted Wenzel state
The transition from the CB state tothe Wenzel state, called the wetting transition
In this work, we study the CB to Wenzel transition using the climbing string method
% [{ W
Ren and E
Vanden-Eijnden, J
Chem
Phys
%138, 134105(2013)}]
We compute the transition states for a three dimensional droplet on patterned surface
The liquid-vapor coexistence is modeled using the Cahn-Hillard equation
Numerical results are obtained for surfaces textured with hexagonal lattice straight pillars
Ultizing several difference initial string,three minimum energy paths and corresponding saddle points are obtained
Keywords: Numercal mehod for PDEs
Cahn-Hillard equation
string method
wetting transition 下载PDF阅读器 PDF全文下载: 初稿 ( 0 ) 作者简介: ZHANG Ya-Nan(1984-), male, associate professor, major research direction: Numerical methods for PDEs and its applications 通信联系人: 【收录情况】 中国科技论文在线: 张亚楠
基于Cahn-Hillard模型的浸润过程数值研究[EB/OL]
北京:中国科技论文在线
) 摘要: 液滴在具有微观结构的疏水性固体表面上可以展现出两种不同的状态: Cassie - Baxter (CB) state 和 Wenzel state
从CB state 变化到Wenzel state 称之为浸润过程
本文利用climbing string method 对这一过程进行数值模拟
针对固体表面上的液滴, 本文借助于三维Cahn-Hillard方程模拟液-汽共存状态
计算区域选择在平面上放置直立的微柱体,并以正六边形排列
通过对CB state 添加三个不同方向的扰动构造初始string,计算出三条不同的最小能量路径同时得到三个临界状态
关键词: 偏微分方程数值解; Cahn-Hillard 方程; 弦方法; 浸润过程 ZHANG Ya-Nan 1,2,* ( 1、 School of mathematics sciences, Soochow University
总览 评价 张亚楠 * ( 苏州大学数学科学学院 quad 中国 ; 苏州 215006
2、 Suzhou
[2017-01-03]
http://www
paper
edu
cn/releasepaper/content/201701-23