A matrix-free multilevel preconditioner for the generalized Stokes problem with discontinuous viscosity
In this paper we present a matrix-free multilevel solver for the generalized Stokes problem with discontinuous viscosity. The algorithm is based on the FGMRES iteration preconditioned with a block-smoothed multigrid method. Numerical experiments on unstructured grids indicate that for a broad range...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
28 July 2022
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| In: |
Journal of computational science
Year: 2022, Volume: 63, Pages: 1-12 |
| ISSN: | 1877-7503 |
| DOI: | 10.1016/j.jocs.2022.101804 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jocs.2022.101804 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S1877750322001661 
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| Author Notes: | Michał Wichrowski, Piotr Krzyżanowski |
MARC
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| 520 | |a In this paper we present a matrix-free multilevel solver for the generalized Stokes problem with discontinuous viscosity. The algorithm is based on the FGMRES iteration preconditioned with a block-smoothed multigrid method. Numerical experiments on unstructured grids indicate that for a broad range of smoother parameters, the convergence speed is only weakly dependent on both the number of unknowns and the jumps of the viscosity coefficient. | ||
| 650 | 4 | |a Discontinuous coefficients | |
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