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Inconsistencies in moment methods -: art. no. 032103

被引：8
|
作者：
Velasco, RM [1 ]
Uribe, FJ [1 ]
García-Colín, LS [1 ]
机构：
[1] Univ Autonoma Metropolitana Iztapalapa, Dept Fis, Mexico City 09340, DF, Mexico
来源：
PHYSICAL REVIEW E | 2002年 / 66卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.66.032103
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In this work we show that moment methods devised to solve the Boltzmann kinetic equation for a simple gas exhibit some inconsistencies. This puzzle, which also appears for the Chapman-Enskog method, is solved resorting to a perturbative expansion in the Knudsen number, thus allowing for a clear way to arrive at a closure condition.
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页数：4
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