A meshfree method for the BGK model for rarefied gas dynamics
A meshfree method for the BGK model for rarefied gas dynamics
复制标题
稀薄气体动力学 BGK 模型的无网格方法
DOI:
10.1007/s12572-019-00254-5
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发表时间:
2019
影响因子:
0.9
通讯作者:
G. Russo
中科院分区:
文献类型:
--
作者:
S. Tiwari;A. Klar;G. Russo
In this paper, we have applied semi-Lagrangian schemes with meshfree interpolation, based on a moving least squares method, to solve the BGK model for rarefied gas dynamics. Sod’s shock tube problems are presented for a large range of mean free paths in one-dimensional physical space and three-dimensional velocity space. In order to validate the solutions obtained from the meshfree method, we have used the piecewise linear spline interpolation. Furthermore, we have compared the solutions of the BGK model with the solutions obtained from direct simulation Monte Carlo method. In the case of a very small mean free path, the numerical solutions are compared with the exact solutions of the compressible Euler equations. Overall, we found that the meshfree interpolation gives better approximation than the piecewise linear spline interpolation.
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影响因子:
4.1
作者:
Tiwari, Sudarshan;Klar, Axel;Hardt, Steffen
通讯作者:
Hardt, Steffen
影响因子:
14.2
作者:
H. Neunzert;J. Struckmeier
通讯作者:
J. Struckmeier
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
G. Dechrist;L. Mieussens
通讯作者:
L. Mieussens
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
G. Russo;F. Filbet
通讯作者:
F. Filbet
DOI:
10.1142/s0218202500000562
发表时间:
2000-11-01
影响因子:
3.5
作者:
Mieussens, L
通讯作者:
Mieussens, L