Multilevel solvers for a finite element discretization of a degenerate problem
In: SIAM journal on numerical analysis, Jg. 42 (2005), Heft 3, S. 1342-1356
Online
academicJournal
- print, 27 ref
Zugriff:
In this paper, finite element discretizations of the degenerate operator -w2(y)uxx - w2(x)uyy = g in the unit square are investigated, where the weight function satisfies ω(ξ) > 0 for ξ ∈ (0,1] and is monotonically increasing. We propose two multilevel methods in order to solve the resulting system of linear algebraic equations. The first method is a multigrid algorithm with line smoother. A proof of the smoothing property is given. The second method is a Bramble-Pasciak-Xu-like preconditioner with line smoother which we call multiple tridiagonal scaling Bramble-Pasciak-Xu preconditioner.
Titel: |
Multilevel solvers for a finite element discretization of a degenerate problem
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Autor/in / Beteiligte Person: | BEUCHLER, Sven |
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Zeitschrift: | SIAM journal on numerical analysis, Jg. 42 (2005), Heft 3, S. 1342-1356 |
Veröffentlichung: | Philadelphia, PA: Society for Industrial and Applied Mathematics, 2005 |
Medientyp: | academicJournal |
Umfang: | print, 27 ref |
ISSN: | 0036-1429 (print) |
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