Central schemes for hydrodynamical limits of discrete-velocity kinetic models
作者:
E. Gabetta,
L. Pareschi,
M. Ronconi,
期刊:
Transport Theory and Statistical Physics
(Taylor Available online 2000)
卷期:
Volume 29,
issue 3-5
页码: 465-477
ISSN:0041-1450
年代: 2000
DOI:10.1080/00411450008205885
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The hydrodynamical scalings of many discrete-velocity kinetic models lead to a small-relaxation time behavior governed by the corresponding Euler type hyperbolic equations or Navier-Stokes type parabolic equations. Using as a prototype a simple discrete-velocity model of the Boltzmann equation we develop a class of central schemes with the correct asymptotic limit that work with uniform second order accuracy with respect to the scaling parameter. Numerical results for both the fluid-dynamic limit and the diffusive limit show the robustness of the present approach.
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