Analysis of injection operators in multigrid solvers for hybridized discontinuous Galerkin methods
Uniform convergence of the geometric multigrid V-cycle is proven for HDG methods with a new set of assumptions on the injection operators from coarser to finer meshes. The scheme involves standard smoothers and local solvers which are bounded, convergent, and consistent. Elliptic regularity is used...
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| Main Authors: | , , |
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| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
31 Mar 2021
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| In: |
Arxiv
Year: 2021, Pages: 1-21 |
| DOI: | 10.48550/arXiv.2104.00118 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.48550/arXiv.2104.00118 Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/2104.00118 
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| Author Notes: | Peipei Lu, Andreas Rupp, and Guido Kanschat |
| Summary: | Uniform convergence of the geometric multigrid V-cycle is proven for HDG methods with a new set of assumptions on the injection operators from coarser to finer meshes. The scheme involves standard smoothers and local solvers which are bounded, convergent, and consistent. Elliptic regularity is used in the proofs. The new assumptions admit injection operators local to a single coarse grid cell. Examples for admissible injection operators are given. The analysis applies to the hybridized local discontinuous Galerkin method, hybridized Raviart-Thomas, and hybridized Brezzi-Douglas-Marini mixed element methods. Numerical experiments are provided to confirm the theoretical results. |
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| Item Description: | Gesehen am 29.09.2022 |
| Physical Description: | Online Resource |
| DOI: | 10.48550/arXiv.2104.00118 |