Conservative Allen-Cahn-Navier-Stokes system for incompressible two-phase fluid flows

被引：77
|
作者：
Jeong, Darae [1 ]
Kim, Junseok [1 ]
机构：
[1] Korea Univ, Dept Math, Seoul 02841, South Korea
来源：
COMPUTERS & FLUIDS | 2017年 / 156卷
基金：
新加坡国家研究基金会;
关键词：
Cahn-Hilliard equation; Conservative Allen-Cahn equation; Phase-field model; Navier Stokes equation; Interfacial tension; Multigrid method; DIFFUSE-INTERFACE MODELS; PHASE-FIELD MODELS; MULTIPHASE FLOWS; SET METHOD; MIXTURE; VOLUME; COMPUTATIONS; SIMULATION; EQUATION; SURFACE;
D O I：
10.1016/j.compfluid.2017.07.009
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A new phase-field model for immiscible incompressible two-phase liquid flows has been developed. The model consists of a conservative Allen-Cahn equation with a space-time dependent Lagrange multiplier and a modified Navier-Stokes equation. Even though most phase-field methods for the multiphase flows preserve total mass, the bulk phase concentrations tend to shift from equilibrium concentration values of a double-well potential. The proposed model has a good feature which avoids mass spreading to the bulk phases. To validate the new system, the deformation of a drop from the initial circular shape in shear flow is presented and compared with other numerical results. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：239 / 246
页数：8
相关论文
共 50 条
12345