A level-set method for droplet impact and penetration into a porous medium

被引：44

作者：

Choi, Moonhyeok ^{[1
]}

Son, Gihun ^{[1
]}

Shim, Woosup ^{[2
]}

机构：

[1] Sogang Univ, Dept Mech Engn, Seoul, South Korea

[2] Agcy Def Dev, Daejeon, South Korea

来源：

COMPUTERS & FLUIDS | 2017年 / 145卷

基金：

新加坡国家研究基金会;

关键词：

Capillary pressure; Droplet impact; Level-set method; Porous surface; LIQUID DROPLETS; NUMERICAL-SIMULATION; HEAT-TRANSFER; SURFACES; FLOW; IMPINGEMENT; HYSTERESIS; INTERFACE; DOMAINS;

D O I：

10.1016/j.compfluid.2016.12.014

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A level-set method is presented for computation of droplet impact and penetration into a porous medium. The volume averaged conservation equations of mass and momentum are employed for the porous region including the effects of porosity and drag force caused by the porous solid matrix. They are coupled to the conservation equations in the external fluid region through the matching conditions of velocity and stress on the porous surface. Computations are conducted to investigate the effects of initial droplet radius, impact velocity, contact angles, particle size and porosity on the droplet spreading and penetration. A simple analytical formulation is developed for the initial droplet penetration depth and compared with the numerical results. The present level-set method is also applied to the computation of droplet-droplet interaction in the porous medium. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：153 / 166

页数：14

共 29 条

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