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Numerical methods and programming, 2003, Volume 4, Issue 1, Pages 294–322
(Mi vmp725)
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This article is cited in 1 scientific paper (total in 1 paper)
Mathematical simulation of unsteady three-dimensional processes in the space gas dynamics
G. A. Tarnavskiia, S. M. Aul'chenkoa, V. A. Vshivkovb a Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
b Institute of Computational Mathematics and Mathematical Geophysics of Siberian Branch of Russian Academy of Sciences, Novosibirsk
Abstract:
The physical, mathematical and computing aspects for simulation of
space gas dynamics problems are considered in the paper. The system of
Euler gas dynamics equations is used as a basic system of differential
equations for the mathematical model. This system is completed by force and
energy compositions that simulate the deviation of state equation from
ideal one, heat transport processes (such as heat conduction, convection
and radiation) and gravitation (point mass gravitation field,
distributed gas cloud self-gravitation). The simulation is carried out on
the basis of total problem decomposition into a number of individual
problems corresponding to various physical processes. The complex computing
structure with autonomous segments corresponds to this decomposition. This
gives the possibility for expansion and complementability of our computer
program system. Some numerical results for shock and wave expansion,
gravitational collapse of motionless and revolving gas clouds, gas clot
expansion which simulates the formation and explosion of protostars are
presented.
Keywords:
mathematical simulation, space gas dynamics, heat transfer, gravitational collapse, application packages.
Citation:
G. A. Tarnavskii, S. M. Aul'chenko, V. A. Vshivkov, “Mathematical simulation of unsteady three-dimensional processes in the space gas dynamics”, Num. Meth. Prog., 4:1 (2003), 294–322
Linking options:
https://www.mathnet.ru/eng/vmp725 https://www.mathnet.ru/eng/vmp/v4/i1/p294
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