The virtual element method on polygonal pixel-based tessellations
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2022
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| Acceso en línea: | |
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| _version_ | 1866909275424555008 |
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| author | Bertoluzza, Silvia Montardini, Monica Pennacchio, Micol Prada, Daniele |
| author_facet | Bertoluzza, Silvia Montardini, Monica Pennacchio, Micol Prada, Daniele |
| contents | We analyze and validate the virtual element method combined with a boundary correction similar to the one in [1,2], to solve problems on two dimensional domains with curved boundaries approximated by polygonal domains. We focus on the case of approximating domains obtained as the union of squared elements out of a uniform structured mesh, such as the one that naturally arises when the domain is issued from an image. We show, both theoretically and numerically, that resorting to polygonal elements allows the assumptions required for stability to be satisfied for any polynomial order. This allows us to fully exploit the potential of higher order methods. Efficiency is ensured by a novel static condensation strategy acting on the edges of the decomposition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2206_03449 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The virtual element method on polygonal pixel-based tessellations Bertoluzza, Silvia Montardini, Monica Pennacchio, Micol Prada, Daniele Numerical Analysis 65N30, 65N12 We analyze and validate the virtual element method combined with a boundary correction similar to the one in [1,2], to solve problems on two dimensional domains with curved boundaries approximated by polygonal domains. We focus on the case of approximating domains obtained as the union of squared elements out of a uniform structured mesh, such as the one that naturally arises when the domain is issued from an image. We show, both theoretically and numerically, that resorting to polygonal elements allows the assumptions required for stability to be satisfied for any polynomial order. This allows us to fully exploit the potential of higher order methods. Efficiency is ensured by a novel static condensation strategy acting on the edges of the decomposition. |
| title | The virtual element method on polygonal pixel-based tessellations |
| topic | Numerical Analysis 65N30, 65N12 |
| url | https://arxiv.org/abs/2206.03449 |