Stability of the Active Flux Method in the Framework of Summation-by-Parts Operators
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arXiv
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| Hauptverfasser: | , , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866913942594387968 |
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| author | Barsukow, Wasilij Klingenberg, Christian Lechner, Lisa Nordström, Jan Ortleb, Sigrun Ranocha, Hendrik |
| author_facet | Barsukow, Wasilij Klingenberg, Christian Lechner, Lisa Nordström, Jan Ortleb, Sigrun Ranocha, Hendrik |
| contents | The Active Flux method is a numerical method for conservation laws using a combination of cell averages and point values, based on ideas from finite volumes and finite differences. This unusual mix has been shown to work well in many situations. We expand the theoretical justifications of the Active Flux method by analyzing it from the point of view of summation-by-parts (SBP) operators, which are routinely used to analyze finite difference, finite volume, and finite element schemes. We show that the Active Flux method can be formulated using degenerate SBP operators, yielding a first and novel approach for showing the energy stability of the Active Flux method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_11068 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Stability of the Active Flux Method in the Framework of Summation-by-Parts Operators Barsukow, Wasilij Klingenberg, Christian Lechner, Lisa Nordström, Jan Ortleb, Sigrun Ranocha, Hendrik Numerical Analysis 65M06, 65M20, 65M70 The Active Flux method is a numerical method for conservation laws using a combination of cell averages and point values, based on ideas from finite volumes and finite differences. This unusual mix has been shown to work well in many situations. We expand the theoretical justifications of the Active Flux method by analyzing it from the point of view of summation-by-parts (SBP) operators, which are routinely used to analyze finite difference, finite volume, and finite element schemes. We show that the Active Flux method can be formulated using degenerate SBP operators, yielding a first and novel approach for showing the energy stability of the Active Flux method. |
| title | Stability of the Active Flux Method in the Framework of Summation-by-Parts Operators |
| topic | Numerical Analysis 65M06, 65M20, 65M70 |
| url | https://arxiv.org/abs/2507.11068 |