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Mapping initial hydrostatic models in Godunov codes

delete2002-12-01
delete100
PRE
AI
M
M. Zingale *
L
Lewis Jonathan Dursi
J
John ZuHone
A
A. C. Calder
B
B. Fryxell
T
T. Plewa
J
J. W. Truran
P
P. M. Ricker
K
Katherine Riley
R
R. Rosner
A
Andrew Siegel
F
F. X. Timmes
N
Natalia Vladimirova
DOI：10.1086/342754delete
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Abstract

Abstract

En 中文
We look in detail at the process of mapping an astrophysical initial model from a stellar evolution code onto the computational grid of an explicit, Godunov-type code while maintaining hydrostatic equilibrium. This mapping process is common in astrophysical simulations, when it is necessary to follow short-timescale dynamics after a period of long-timescale buildup. We look at the effects of spatial resolution, boundary conditions, the treatment of the gravitational source terms in the hydrodynamics solver, and the initialization process itself. We conclude with a summary detailing the mapping process that yields the lowest ambient velocities in the mapped model.
Keywords:
hydrodynamics
methods : numerical
stellar dynamics
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Journal

Astrophysical Journal Supplement Series cover
Astrophysical Journal Supplement Series
IF:
8.5
Papers:
5.7K
Citations:
4.2W

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