A comparison of solver performance for complex gastric electrophysiology models

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dc.contributor.author Sathar, Shameer en
dc.contributor.author Cheng, Leo en
dc.contributor.author Trew, Mark en
dc.coverage.spatial Milan, ITALY en
dc.date.accessioned 2017-07-06T06:17:08Z en
dc.date.issued 2015-01-01 en
dc.identifier.citation 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Milan, ITALY, 25 Aug 2015 - 29 Aug 2015. 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE. 1452-1455. 01 Jan 2015 en
dc.identifier.isbn 978-1-4244-9271-8 en
dc.identifier.issn 1557-170X en
dc.identifier.uri http://hdl.handle.net/2292/34051 en
dc.description.abstract Computational techniques for solving systems of equations arising in gastric electrophysiology have not been studied for efficient solution process. We present a computationally challenging problem of simulating gastric electrophysiology in anatomically realistic stomach geometries with multiple intracellular and extracellular domains. The multiscale nature of the problem and mesh resolution required to capture geometric and functional features necessitates efficient solution methods if the problem is to be tractable. In this study, we investigated and compared several parallel preconditioners for the linear systems arising from tetrahedral discretisation of electrically isotropic and anisotropic problems, with and without stimuli. The results showed that the isotropic problem was computationally less challenging than the anisotropic problem and that the application of extracellular stimuli increased workload considerably. Preconditioning based on block Jacobi and algebraic multigrid solvers were found to have the best overall solution times and least iteration counts, respectively. The algebraic multigrid preconditioner would be expected to perform better on large problems. en
dc.publisher IEEE en
dc.relation.ispartof 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) en
dc.relation.ispartofseries 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Science & Technology en
dc.subject Technology en
dc.subject Engineering, Biomedical en
dc.subject Engineering, Electrical & Electronic en
dc.subject Engineering en
dc.subject INTERSTITIAL-CELLS en
dc.subject BIDOMAIN EQUATIONS en
dc.subject PRECONDITIONER en
dc.subject CAJAL en
dc.title A comparison of solver performance for complex gastric electrophysiology models en
dc.type Conference Item en
pubs.begin-page 1452 en
dc.rights.holder Copyright: IEEE en
dc.identifier.pmid 26736543 en
pubs.end-page 1455 en
pubs.finish-date 2015-08-29 en
pubs.publication-status Published en
pubs.start-date 2015-08-25 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Proceedings en
pubs.elements-id 518809 en
pubs.org-id Bioengineering Institute en
pubs.org-id ABI Associates en
pubs.record-created-at-source-date 2017-07-06 en
pubs.dimensions-id 26736543 en


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