Multilevel, extrapolation and sparse grid methods:

Abstract: "Multigrid Methods are asymptotically optimal solvers for discretized partial differential equations (PDE). For the optimal solutions of PDEs, however, the quality of the discretization is of the same importance as the speed of the algebraic solution process. Especially for high accur...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Rüde, Ulrich 1957- (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: München 1993
Schriftenreihe:Technische Universität <München>: TUM-I 9319
Schlagworte:
Zusammenfassung:Abstract: "Multigrid Methods are asymptotically optimal solvers for discretized partial differential equations (PDE). For the optimal solutions of PDEs, however, the quality of the discretization is of the same importance as the speed of the algebraic solution process. Especially for high accuracy requirements, high order discretizations become increasingly attractive. We describe higher order techniques, like extrapolation and sparse grid combination that are particularly interesting in the context of multilevel algorithms, because they are based on discretizing the problems on grids with different mesh sizes. Classical Richardson extrapolation can be extended and generalized in many ways. One generalization is to consider the mesh widths in the different coordinate directions as distinct parameters. This leads to the so-called multivariate extrapolation and the combination technique."
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