Preconditioning for Mixed Finite Element Formulations of Elliptic Problems

Tim Wildey, Guangri Xue

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Abstract

In this paper, we discuss a preconditioning technique for mixed finite element discretizations of elliptic equations. The technique is based on a block-diagonal approximation of the mass matrix which maintains the sparsity and positive definiteness of the corresponding Schur complement. This preconditioner arises from the multipoint flux mixed finite element method and is robust with respect to mesh size and is better conditioned for full permeability tensors than a preconditioner based on a diagonal approximation of the mass matrix. © Springer-Verlag Berlin Heidelberg 2013.
Original languageEnglish (US)
Title of host publicationDomain Decomposition Methods in Science and Engineering XX
PublisherSpringer Nature
Pages175-182
Number of pages8
ISBN (Print)9783642352744
DOIs
StatePublished - May 9 2013
Externally publishedYes

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