期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 254, 期 -, 页码 99-113出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2012.10.005
关键词
Multiphase flow; Surface tension; Droplet deformation; Continuum surface force (CSF); Interface; Projection method
资金
- Scientific and Technological Research Council of Turkey (TUBITAK) [110M547]
- European Commission Research Directorate General under Marie Curie International Reintegration Grant program [PIRG03-GA-2008-231048]
- Yousef Jameel scholarship
We have presented a multiphase incompressible smoothed particle hydrodynamics method with an improved interface treatment procedure. To demonstrate the effectiveness of the interface treatment which can handle multiphase flow problems with high density and viscosity ratios, we have modeled several challenging two phase flow problems; namely, single vortex flow, square droplet deformation, droplet deformation in shear flow, and finally the Newtonian bubble rising in viscous and viscoelastic liquids. The proposed interface treatment includes the usage of (i) different smoothing functions (in this work, cubic spline kernel function for discretizing equations associated with the calculation of the surface tension force while the quintic spline for the discretization of governing equations and the relevant boundary conditions), and (ii) a new discretization scheme for calculating the pressure gradient. It is shown that with the application of the improved interface treatment, it becomes possible to model multiphase flow problems with the density and viscosity ratios up to 1000 and 100 respectively while using standard projection method. The utilization of cubic spline for the continuum surface force model significantly improves the quality of the calculated interface, thereby eliminating the interphase particle penetrations, and in turn leading to the calculation of more accurate velocity and pressure fields. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据