A posteriori error estimates for mixed-dimensional Darcy flow using non-matching grids
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911310799699968 |
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| author | Varela, Jhabriel Schaerer, Christian E. Keilegavlen, Eirik Berre, Inga |
| author_facet | Varela, Jhabriel Schaerer, Christian E. Keilegavlen, Eirik Berre, Inga |
| contents | In this article, we extend the a posteriori error estimates for hierarchical mixed-dimensional elliptic equations developed in [Varela et al., J. Numer. Math., 48 (2023), pp. 247-280] to the setting of non-matching mixed-dimensional grids. The extension is achieved by introducing transfer grids between the planar subdomain and interface grids, together with stable discrete projection operators for primal (potential) and dual (flux) variables. The proposed non-matching estimators remain fully guaranteed and computable. Numerical experiments, including three-dimensional problems based on community benchmarks for incompressible Darcy flow in fractured porous media, demonstrate reliable performance of the estimators for the non-matching grids and effectivity that is comparable to the estimators for matching grids. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09087 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A posteriori error estimates for mixed-dimensional Darcy flow using non-matching grids Varela, Jhabriel Schaerer, Christian E. Keilegavlen, Eirik Berre, Inga Numerical Analysis 65N15, 65N50, 76S05 In this article, we extend the a posteriori error estimates for hierarchical mixed-dimensional elliptic equations developed in [Varela et al., J. Numer. Math., 48 (2023), pp. 247-280] to the setting of non-matching mixed-dimensional grids. The extension is achieved by introducing transfer grids between the planar subdomain and interface grids, together with stable discrete projection operators for primal (potential) and dual (flux) variables. The proposed non-matching estimators remain fully guaranteed and computable. Numerical experiments, including three-dimensional problems based on community benchmarks for incompressible Darcy flow in fractured porous media, demonstrate reliable performance of the estimators for the non-matching grids and effectivity that is comparable to the estimators for matching grids. |
| title | A posteriori error estimates for mixed-dimensional Darcy flow using non-matching grids |
| topic | Numerical Analysis 65N15, 65N50, 76S05 |
| url | https://arxiv.org/abs/2512.09087 |