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Preconditioning finite element subsurface flow solutions on distributed memory parallel computers.

Binley, Andrew M. and Murphy, Malcolm F. (1993) Preconditioning finite element subsurface flow solutions on distributed memory parallel computers. Advances in Water Resources, 16 (3). pp. 191-202.

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Abstract

Due to their low cost and high expansion capabilities, distributed memory parallel computers, consisting of relatively large arrays of processor elements with local memory, offer great potential for solving large scale three-dimensional subsurface flow problems. We consider here two possible solution methods for such detailed modelling using the finite element method. One is based on the commonly used diagonally scaled conjugate gradient method. The other uses an element-by-element preconditioner in the conjugate gradient method which exploits the natural parallelism in the finite element method. Results using both methods are documented for saturated and variably saturated flow simulations carried out on a single Intel i860 processor and an array of Inmos transputer/Intel i860 processors at Lancaster.

Item Type: Article
Journal or Publication Title: Advances in Water Resources
Uncontrolled Keywords: parallel computing ; groundwater flow ; finite element method ; conjugate gradient method ; element-by-element preconditioning
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22580
Deposited By: ep_ss_importer
Deposited On: 23 Jan 2009 10:29
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:02
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22580

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