A Co-Scaling Grid for Athena++ II: Magnetohydrodynamics
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866915074917007360 |
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| author | Heitsch, Fabian Habegger, Roark |
| author_facet | Heitsch, Fabian Habegger, Roark |
| contents | We extend the co-scaling formalism of Habegger & Heitsch (2021) implemented in Athena++ to magneto-hydrodynamics. 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 2nd order in space. Applying our implementation to standard magneto-hydrodynamic test cases leads to improved results and higher efficiency, compared to the fixed-grid solutions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_16300 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Co-Scaling Grid for Athena++ II: Magnetohydrodynamics Heitsch, Fabian Habegger, Roark Instrumentation and Methods for Astrophysics We extend the co-scaling formalism of Habegger & Heitsch (2021) implemented in Athena++ to magneto-hydrodynamics. 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 2nd order in space. Applying our implementation to standard magneto-hydrodynamic test cases leads to improved results and higher efficiency, compared to the fixed-grid solutions. |
| title | A Co-Scaling Grid for Athena++ II: Magnetohydrodynamics |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2412.16300 |