Moment equations for a granular material in a thermal bath

被引：52

作者：

Bobylev, AV ^{[1
]}

Cercignani, C

机构：

[1] Karlstad Univ, Div Engn Sci Phys & Math, Karlstad, Sweden

[2] Politecn Milan, Dipartimento Matemat, I-20133 Milan, Italy

来源：

JOURNAL OF STATISTICAL PHYSICS | 2002年 / 106卷 / 3-4期

关键词：

granular material; Boltzmann equation; thermal bath;

D O I：

10.1023/A:1013754205008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compute the moment equations for a granular material under the simplifying assumption of pseudo-Maxwellian particles approximating dissipative hard spheres. We obtain the general moment equations of second and third order and the isotropic moment equations of any order. Our equations describe, in the space homogeneous case, the granular system described by a Boltzmann-like collision term and subject to a Brownian motion due to the interaction with a bath, described by a Fokker-Planck term. The trend to equilibrium is studied in detail.

引用

页码：547 / 567

页数：21

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