Effects of molecular diffusivity on shock-wave structures in monatomic gases.
Effects of molecular diffusivity on shock-wave structures in monatomic gases.
复制标题
分子扩散率对单原子气体中冲击波结构的影响。
DOI:
10.1103/physreve.104.035111
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Reddy LMH
中科院分区:
文献类型:
--
作者:
Reddy LMH
We present a full investigation into shock-wave profile description using hydrodynamics models. We identified constitutive equations that provide better agreement for all parameters involved in testing hydrodynamic equations for the prediction of shock structure in a monatomic gas in the Mach number range. The constitutive equations are extracted from a previously derived thermomechanically consistent Burnett regime continuum flow model. The numerical computations of the resulting hydrodynamic equations along with classical ones are performed using a finite difference global solution (FDGS) scheme. Compared to previous studies that focused mainly on the density profile across the shock, here we also include temperature profiles as well as non-negativity of entropy production throughout the shock. The results obtained show an improvement upon those obtained previously in the bivelocity (or volume and mass diffusion) hydrodynamics and are more accurate than in the hydrodynamic models from expansions method solutions to the Boltzmann equation.
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DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
W. Garen;R. Synofzik;A. Frohn
通讯作者:
A. Frohn
影响因子:
3.7
作者:
M. H. L. Reddy;Meheboob Alam
通讯作者:
Meheboob Alam
DOI:
10.1063/5.0026758
发表时间:
2020
期刊:
--
影响因子:
--
作者:
Dadzie S
通讯作者:
Dadzie S
影响因子:
2.4
作者:
R. M. Velasco;F. Uribe
通讯作者:
F. Uribe
DOI:
--
发表时间:
1990
期刊:
Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences
影响因子:
--
作者:
R. Narasimha;P. Das
通讯作者:
P. Das