Exponential-time differencing schemes for low-mass DPD systems

被引：6
|
作者：
Phan-Thien, N. [1 ]
Mai-Duy, N. [1 ,2 ]
Pan, D. [1 ]
Khoo, B. C. [1 ]
机构：
[1] Natl Univ Singapore, Fac Engn, Dept Mech Engn, Singapore 117548, Singapore
[2] Univ So Queensland, Fac Engn & Surveying, Computat Engn & Sci Res Ctr, Toowoomba, Qld 4350, Australia
来源：
COMPUTER PHYSICS COMMUNICATIONS | 2014年 / 185卷 / 01期
基金：
澳大利亚研究理事会;
关键词：
Exponential-time differencing scheme; Dissipative particle dynamics; Stiff stochastic differential equation; Overdamped systems; DISSIPATIVE PARTICLE DYNAMICS; MODELS;
D O I：
10.1016/j.cpc.2013.09.022
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Several exponential-time differencing (ETD) schemes are introduced into the method of dissipative particle dynamics (DPD) to solve the resulting stiff stochastic differential equations in the limit of small mass, where emphasis is placed on the handling of the fluctuating terms (i.e., those involving random forces). Their performances are investigated numerically in some test viscometric flows. Results obtained show that the present schemes outperform the velocity-Verlet algorithm regarding both the satisfaction of equipartition and the maximum allowable time step. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：229 / 235
页数：7
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