Mapping initial hydrostatic models in godunov codes

M. Zlngale, L. J. Dursi, J. ZuHone, A. C. Calder, B. Fryxell, T. Plewa, J. W. Truran, A. Caceres, K. Olson, P. M. Ricker, K. Riley, R. Rosner, A. Siegel, Francis Timmes, N. Vladimirova

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)539-565
Number of pages27
JournalAstrophysical Journal, Supplement Series
Volume143
Issue number2
DOIs
StatePublished - Dec 2002
Externally publishedYes

Fingerprint

hydrostatics
astrophysics
computational grids
timescale
stellar evolution
spatial resolution
boundary condition
hydrodynamics
boundary conditions
simulation
code

Keywords

  • Hydrodynamics
  • Methods: Numerical
  • Stellar dynamics

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Zlngale, M., Dursi, L. J., ZuHone, J., Calder, A. C., Fryxell, B., Plewa, T., ... Vladimirova, N. (2002). Mapping initial hydrostatic models in godunov codes. Astrophysical Journal, Supplement Series, 143(2), 539-565. https://doi.org/10.1086/342754

Mapping initial hydrostatic models in godunov codes. / Zlngale, M.; Dursi, L. J.; ZuHone, J.; Calder, A. C.; Fryxell, B.; Plewa, T.; Truran, J. W.; Caceres, A.; Olson, K.; Ricker, P. M.; Riley, K.; Rosner, R.; Siegel, A.; Timmes, Francis; Vladimirova, N.

In: Astrophysical Journal, Supplement Series, Vol. 143, No. 2, 12.2002, p. 539-565.

Research output: Contribution to journalArticle

Zlngale, M, Dursi, LJ, ZuHone, J, Calder, AC, Fryxell, B, Plewa, T, Truran, JW, Caceres, A, Olson, K, Ricker, PM, Riley, K, Rosner, R, Siegel, A, Timmes, F & Vladimirova, N 2002, 'Mapping initial hydrostatic models in godunov codes', Astrophysical Journal, Supplement Series, vol. 143, no. 2, pp. 539-565. https://doi.org/10.1086/342754
Zlngale M, Dursi LJ, ZuHone J, Calder AC, Fryxell B, Plewa T et al. Mapping initial hydrostatic models in godunov codes. Astrophysical Journal, Supplement Series. 2002 Dec;143(2):539-565. https://doi.org/10.1086/342754
Zlngale, M. ; Dursi, L. J. ; ZuHone, J. ; Calder, A. C. ; Fryxell, B. ; Plewa, T. ; Truran, J. W. ; Caceres, A. ; Olson, K. ; Ricker, P. M. ; Riley, K. ; Rosner, R. ; Siegel, A. ; Timmes, Francis ; Vladimirova, N. / Mapping initial hydrostatic models in godunov codes. In: Astrophysical Journal, Supplement Series. 2002 ; Vol. 143, No. 2. pp. 539-565.
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