Gmunu: paralleled, grid-adaptive, general-relativistic magnetohydrodynamics in curvilinear geometries in dynamical space–times
| Autor: | Patrick Chi-Kit Cheong, Tjonnie G. F. Li, Harry Ho-Yin Ng, Alan Tsz-Lok Lam |
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| Rok vydání: | 2021 |
| Předmět: |
Magnetic monopole
FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) General Relativity and Quantum Cosmology law.invention simulations [software] Multigrid method law Applied mathematics Cartesian coordinate system Divergence (statistics) Instrumentation and Methods for Astrophysics (astro-ph.IM) relativistic processes High Energy Astrophysical Phenomena (astro-ph.HE) Physics Curvilinear coordinates (magnetohydrodynamics) MHD Finite volume method Adaptive mesh refinement numerical [methods] Astronomy and Astrophysics Space and Planetary Science hydrodynamics Magnetohydrodynamics Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - High Energy Astrophysical Phenomena |
| Zdroj: | Monthly Notices of the Royal Astronomical Society |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/stab2606 |
| Popis: | We present an update on the General-relativistic multigrid numerical (Gmunu) code, a parallelized, multidimensional curvilinear, general relativistic magnetohydrodynamics code with an efficient non-linear cell-centred multigrid elliptic solver, which is fully coupled with an efficient block-based adaptive mesh refinement module. To date, as described in this paper, Gmunu is able to solve the elliptic metric equations in the conformally flat condition approximation with the multigrid approach and the equations of ideal general-relativistic magnetohydrodynamics by means of high-resolution shock-capturing finite-volume method with reference metric formularised multidimensionally in Cartesian, cylindrical, or spherical geometries. To guarantee the absence of magnetic monopoles during the evolution, we have developed an elliptical divergence cleaning method by using the multigrid solver. In this paper, we present the methodology, full evolution equations and implementation details of Gmunu and its properties and performance in some benchmarking and challenging relativistic magnetohydrodynamics problems. ispartof: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY vol:508 issue:2 pages:2279-2301 status: published |
| Databáze: | OpenAIRE |
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