A Coscaling Grid for Athena++. II. Magnetohydrodynamics
We extend the coscaling formalism of Habegger & Heitsch implemented in Athena++ to magnetohydrodynamics. The formalism relies on flow symmetries in astrophysical problems involving expansion, contraction, and center-of-mass motion. The formalism is fully consistent with the upwind constrained tr...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Supplement Series |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4365/ada289 |
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| Summary: | We extend the coscaling formalism of Habegger & Heitsch implemented in Athena++ to magnetohydrodynamics. The formalism relies on flow symmetries in astrophysical problems involving expansion, contraction, and center-of-mass motion. The formalism is fully consistent with the upwind constrained transport method implemented in Athena++ and is accurate to second order in space. Applying our implementation to standard magnetohydrodynamic test cases leads to improved results and higher efficiency, compared to the fixed-grid solutions. |
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| ISSN: | 0067-0049 |