Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 236, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4365/aabe75
Keywords
hydrodynamics; magnetohydrodynamics (MHD); methods: numerical
Categories
Funding
- Austrian Science Fund (Fonds zur Forderung der wissenschaftlichen Forschung, FWF) [I 1111-N27]
- German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) [FI 706/15-1]
- Ruhr Astroparticle and Plasma Physics (RAPP) Center - MERCUR project [St-2014-040]
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We describe the magnetohydrodynamics (MHD) code CRONOS, which has been used in astrophysics and space-physics studies in recent years. CRONOS has been designed to be easily adaptable to the problem in hand, where the user can expand or exchange core modules or add new functionality to the code. This modularity comes about through its implementation using a C++ class structure. The core components of the code include solvers for both hydrodynamical (HD) and MHD problems. These problems are solved on different rectangular grids, which currently support Cartesian, spherical, and cylindrical coordinates. CRONOS uses a finite-volume description with different approximate Riemann solvers that can be chosen at runtime. Here, we describe the implementation of the code with a view toward its ongoing development. We illustrate the code's potential through several (M)HD test problems and some astrophysical applications.
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