Strict simulations of non-equilibrium dynamics of colloids

被引：11
|
作者：
Yamamoto, Ryoichi [1 ]
Kim, Kang
Nakayama, Yasuya
机构：
[1] Kyoto Univ, Dept Chem Engn, Kyoto 6158510, Japan
[2] Inst Mol Sci, Dept Computat Mol Sci, Okazaki, Aichi 4448585, Japan
[3] Kyushu Univ, Dept Chem Engn, Fukuoka 8190395, Japan
[4] Japan Sci & Technol Agcy, PRESTO, Kawaguchi 3320012, Japan
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 311卷 / 1-3期
基金：
日本学术振兴会;
关键词：
colloid; simulation; hydrodynamics; electrophoresis;
D O I：
10.1016/j.colsurfa.2007.08.041
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We review our new direct numerical simulation scheme, called "smoothed profile (SP) method", which is implemented for a full explicit time-marching simulations of colloidal dispersions. The SP method provides a way to couple continuum fluid dynamics with rigid-body dynamics through smoothed profile of colloidal particle. Our formulation includes extensions to colloids in multi-component solvents such as charged colloids in electrolyte solutions. This method enables us to compute the time evolutions of colloidal particles, ions, and host fluids simultaneously by solving Newton, advection-diffusion, and Navier-Stokes equations so that the electro-hydrodynamic couplings can be fully taken into account. The electrophoretic mobilities of charged spherical particles are calculated in several situations. The comparisons with approximation theories show quantitative agreements for dilute dispersions without any empirical parameters. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：42 / 47
页数：6
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