Stabilization-free HHO a posteriori error control
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2022
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| _version_ | 1866913412193189888 |
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| author | Bertrand, Fleurianne Carstensen, Carsten Gräßle, Benedikt Tran, Ngoc Tien |
| author_facet | Bertrand, Fleurianne Carstensen, Carsten Gräßle, Benedikt Tran, Ngoc Tien |
| contents | The known a posteriori error analysis of hybrid high-order methods (HHO) treats the stabilization contribution as part of the error and as part of the error estimator for an efficient and reliable error control. This paper circumvents the stabilization contribution on simplicial meshes and arrives at a stabilization-free error analysis with an explicit residual-based a posteriori error estimator for adaptive mesh-refining as well as an equilibrium-based guaranteed upper error bound (GUB). Numerical evidence in a Poisson model problem supports that the GUB leads to realistic upper bounds for the displacement error in the piecewise energy norm. The adaptive mesh-refining algorithm associated to the explicit residual-based a posteriori error estimator recovers the optimal convergence rates in computational benchmarks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_01038 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Stabilization-free HHO a posteriori error control Bertrand, Fleurianne Carstensen, Carsten Gräßle, Benedikt Tran, Ngoc Tien Numerical Analysis 65N12, 65N30, 65Y20 The known a posteriori error analysis of hybrid high-order methods (HHO) treats the stabilization contribution as part of the error and as part of the error estimator for an efficient and reliable error control. This paper circumvents the stabilization contribution on simplicial meshes and arrives at a stabilization-free error analysis with an explicit residual-based a posteriori error estimator for adaptive mesh-refining as well as an equilibrium-based guaranteed upper error bound (GUB). Numerical evidence in a Poisson model problem supports that the GUB leads to realistic upper bounds for the displacement error in the piecewise energy norm. The adaptive mesh-refining algorithm associated to the explicit residual-based a posteriori error estimator recovers the optimal convergence rates in computational benchmarks. |
| title | Stabilization-free HHO a posteriori error control |
| topic | Numerical Analysis 65N12, 65N30, 65Y20 |
| url | https://arxiv.org/abs/2207.01038 |