GenASiS: General Astrophysical Simulation System. II. Nonrelativistic Hydrodynamics
Abstract
In this paper, the second in a series, we document the algorithms and solvers for compressible nonrelativistic hydrodynamics implemented in GenASiS (General Astrophysical Simulation System)---a new code being developed initially and primarily, though by no means exclusively, for the simulation of core-collapse supernovae. In the Mathematics division of GenASiS we introduce Solvers, which includes finite-volume updates for generic hyperbolic BalanceEquations and ordinary differential equation integration Steps. We also introduce the Physics division of GenASiS; this extends the Manifolds division of Mathematics into physical Spaces, defines StressEnergies, and combines these into Universes. We benchmark the hydrodynamics capabilities of GenASiS against many standard test problems; the results illustrate the basic competence of our implementation, demonstrate the manifest superiority of the HLLC over the HLL Riemann solver in a number of interesting cases, and provide preliminary indications of the code's ability to scale and to function with cell-by-cell fixed-mesh refinement.
Cite
@article{arxiv.1207.3393,
title = {GenASiS: General Astrophysical Simulation System. II. Nonrelativistic Hydrodynamics},
author = {Christian Y. Cardall and Reuben D. Budiardja and Eirik Endeve and Anthony Mezzacappa},
journal= {arXiv preprint arXiv:1207.3393},
year = {2015}
}
Comments
Belated withdrawal. During the review process, most of the content of this manuscript was merged into arXiv:1207.3392