Transport coefficients of dissipative particle dynamics with finite time step

被引：27
|
作者：
Noguchi, H. [1 ]
Gompper, G. [1 ]
机构：
[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany
来源：
EPL | 2007年 / 79卷 / 03期
关键词：
D O I：
10.1209/0295-5075/79/36002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The viscosity and self-diffusion constant of a mesoscale hydrodynamic method, dissipative particle dynamics (DPD), are investigated. The viscosity of DPD with finite time step, including the Lowe-Anderson thermostat, is derived analytically for the ideal-gas equation of state and phenomenologically for systems with soft repulsive potentials. The results agree well with numerical data. A velocity-scaling version of the profile-unbiased thermostat is shown to be useful to obtain faster diffusion than for the DPD thermostat.
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页数：6
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