Simulation of Droplet Resting on Micro-structured Surface by Lattice Boltzmann Method

被引：1
|
作者：
Ju, Yu-Tang [1 ]
Kuo, Feng-Chun [1 ]
Lin, Yi-Ting [1 ]
Lin, Chao-An [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Power Mech Engn, Hsinchu 30013, Taiwan
来源：
37TH NATIONAL CONFERENCE ON THEORETICAL AND APPLIED MECHANICS (37TH NCTAM 2013) & THE 1ST INTERNATIONAL CONFERENCE ON MECHANICS (1ST ICM) | 2014年 / 79卷
关键词：
lattice Boltzmann model; partial wetting boundary; large liquid-gas density ratio; micro-structure; COMPLEX-GEOMETRY FLOWS; BOUNDARY-CONDITIONS; MODEL; FLUIDS; 2D;
D O I：
10.1016/j.proeng.2014.06.321
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Three-dimensional liquid droplet resting on micro-structured pillar surface is simulated with lattice Boltzmann method incorporating the Cahn-Hilliard equation. This is based on the two-phase model of Zheng et al. [14] combined with partial wetting boundary condition of Briant et al. [12]. Two Simulations are conducted with the same area fractions but different pillar heights, i.e. surface roughness, which is shown to have minor influence on the apparent contact angles at the Cassie state investigated. The predicted apparent contact angles are contrasted with measurements. Predictions show lower apparent contact angles and the deviations are around 10%. This might be due to the inadequate treatment of wetting boundary condition of the pillar surface, and this is deserved to be further studied. (C) 2014 Elsevier Ltd.
引用
收藏
页码：133 / 136
页数：4
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