Analysis of the Relaxation Process Using Nonrelativistic Kinetic Equation

被引：2

作者：

Takamoto, Makoto ^{[1
]}

Inutsuxa, Shu-ichiro ^{[2
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

来源：

PROGRESS OF THEORETICAL PHYSICS | 2010年 / 123卷 / 05期

关键词：

GAS; PROPAGATION; SPHERE; SOUND;

D O I：

10.1143/PTP.123.903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the linearized kinetic equation of relaxation model proposed by Bhatnagar, Gross and Krook [P. L. Bhatnagar, E. P. Gross and M. Krook, Phys. Rev. 94 (1954), 511] (also called BGK model) and solve the dispersion relation. Using the solution of the dispersion relation, we analyze the relaxation of the macroscopic mode and kinetic mode. Since the BGK model is not based on the expansion in the mean free path in contrast to the Chapman-Enskog expansion, the solution can describe the accurate relaxation of initial disturbance with any wavelength. This nonrelativistic analysis gives suggestions for our next work on the relativistic analysis of relaxation.

引用

页码：903 / 920

页数：18

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