AN EXTENSION OF THE ATHENA plus plus CODE FRAMEWORK FOR GRMHD BASED ON ADVANCED RIEMANN SOLVERS AND STAGGERED-MESH CONSTRAINED TRANSPORT

被引：153

作者：

White, Christopher J. ^{[1
]}

Stone, James M. ^{[1
]}

Gammie, Charles F. ^{[2
,3
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA

[2] Univ Illinois, Dept Phys, 1110 West Green St, Urbana, IL 61801 USA

[3] Univ Illinois, Dept Astron, 1002 West Green St, Urbana, IL 61801 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2016年 / 225卷 / 02期

基金：

美国国家科学基金会;

关键词：

accretion; accretion disks; black hole physics; magnetohydrodynamics (MHD); relativistic processes; GENERAL-RELATIVISTIC MAGNETOHYDRODYNAMICS; BLACK-HOLE ACCRETION; UNSPLIT GODUNOV METHOD; EQUATION-OF-STATE; NUMERICAL SCHEME; IDEAL MHD; HYDRODYNAMICS; SIMULATIONS; FLOWS; DISKS;

D O I：

10.3847/0067-0049/225/2/22

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new general relativistic magnetohydrodynamics (GRMHD) code integrated into the Athena++ framework. Improving upon the techniques used in most GRMHD codes, ours allows the use of advanced, less diffusive Riemann solvers, in particular HLLC and HLLD. We also employ a staggered-mesh constrained transport algorithm suited for curvilinear coordinate systems in order to maintain the divergence-free constraint of the magnetic field. Our code is designed to work with arbitrary stationary spacetimes in one, two, or three dimensions, and we demonstrate its reliability through a number of tests. We also report on its promising performance and scalability.

引用

页数：22

共 3 条

[1] The Athena plus plus Adaptive Mesh Refinement Framework: Design and Magnetohydrodynamic Solvers
Stone, James M.
Tomida, Kengo
White, Christopher J.
Felker, Kyle G.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020, 249 (01):
[2] The Athena plus plus Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity
Tomida, Kengo
Stone, James M.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2023, 266 (01):
[3] An Extension of the Athena plus plus Code Framework for Radiation-magnetohydrodynamics in General Relativity Using a Finite-solid-angle Discretization
White, Christopher J.
Mullen, Patrick D.
Jiang, Yan-Fei
Davis, Shane W.
Stone, James M.
Morozova, Viktoriya
Zhang, Lizhong
ASTROPHYSICAL JOURNAL, 2023, 949 (02):

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