Effect of the dynamic pressure on the shock wave structure in a rarefied polyatomic gas

被引：61
|
作者：
Taniguchi, Shigeru [1 ]
Arima, Takashi [2 ]
Ruggeri, Tommaso [3 ,4 ]
Sugiyama, Masaru [1 ]
机构：
[1] Nagoya Inst Technol, Grad Sch Engn, Nagoya, Aichi 4668555, Japan
[2] Nagoya Inst Technol, Ctr Social Contribut & Collaborat, Nagoya, Aichi 4668555, Japan
[3] Univ Bologna, Dept Math, Bologna, Italy
[4] Univ Bologna, Res Ctr Appl Math CIRAM, Bologna, Italy
来源：
PHYSICS OF FLUIDS | 2014年 / 26卷 / 01期
关键词：
EXTENDED THERMODYNAMICS; CARBON DIOXIDE; ENTROPY; LAWS;
D O I：
10.1063/1.4861368
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
We study the shock wave structure in a rarefied polyatomic gas based on a simplified model of extended thermodynamics in which the dissipation is due only to the dynamic pressure. In this case the differential system is very simple because it is a variant of Euler system with a new scalar equation for the dynamic pressure [T. Arima, S. Taniguchi, T. Ruggeri, and M. Sugiyama, Phys. Lett. A 376, 2799-2803 (2012)]. It is shown that this theory is able to describe the three types of the shock wave structure observed in experiments: the nearly symmetric shock wave structure (Type A, small Mach number), the asymmetric structure (Type B, moderate Mach number), and the structure composed of thin and thick layers (Type C, large Mach number). (C) 2014 AIP Publishing LLC.
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页数：15
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