Multigrid preconditioned conjugate-gradient solver for mixed finite-element method

The mixed finite-element approximation to a second-order elliptic PDE results in a saddle-point problem and leads to an indefinite linear system of equations. The mixed system of equations can be transformed into coupled symmetric positive-definite matrix equations, or a Schur complement problem, us...

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Bibliographic Details
Published in:	Computational geosciences Vol. 14; no. 2; pp. 289 - 299
Main Authors:	Wilson, John David, Naff, Richard L.
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Netherlands 01.03.2010 Springer Nature B.V
Subjects:	Algorithms Earth and Environmental Science Earth Sciences Finite element analysis Fluid mechanics Geotechnical Engineering & Applied Earth Sciences Hydraulics Hydrogeology Mathematical Modeling and Industrial Mathematics Original Paper Soil Science & Conservation Conjugate gradient Mixed finite element method Multigrid Subsurface flow Distorted grids Nested iteration Lowest-order Raviart–Thomas
ISSN:	1420-0597, 1573-1499
Online Access:	Get full text
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