DynEarthSol2D: An efficient unstructured finite element method to study long-term tectonic deformation

Handle URI:
http://hdl.handle.net/10754/552164
Title:
DynEarthSol2D: An efficient unstructured finite element method to study long-term tectonic deformation
Authors:
Choi, E.; Tan, E.; Lavier, L. L.; Calo, Victor M. ( 0000-0002-1805-4045 )
Abstract:
Many tectonic problems require to treat the lithosphere as a compressible elastic material, which can also flow viscously or break in a brittle fashion depending on the stress level applied and the temperature conditions. We present a flexible methodology to address the resulting complex material response, which imposes severe challenges on the discretization and rheological models used. This robust, adaptive, two-dimensional, finite element method solves the momentum balance and the heat equation in Lagrangian form using unstructured meshes. An implementation of this methodology is released to the public with the publication of this paper and is named DynEarthSol2D (available at http://bitbucket.org/tan2/dynearthsol2). The solver uses contingent mesh adaptivity in places where shear strain is focused (localization) and a conservative mapping assisted by marker particles to preserve phase and facies boundaries during remeshing. We detail the solver and verify it in a number of benchmark problems against analytic and numerical solutions from the literature. These results allow us to verify and validate our software framework and show its improved performance by an order of magnitude compared against an earlier implementation of the Fast Lagrangian Analysis of Continua algorithm.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
DynEarthSol2D: An efficient unstructured finite element method to study long-term tectonic deformation 2013, 118 (5):2429 Journal of Geophysical Research: Solid Earth
Journal:
Journal of Geophysical Research: Solid Earth
Issue Date:
May-2013
DOI:
10.1002/jgrb.50148
Type:
Article
ISSN:
21699313
Additional Links:
http://doi.wiley.com/10.1002/jgrb.50148
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChoi, E.en
dc.contributor.authorTan, E.en
dc.contributor.authorLavier, L. L.en
dc.contributor.authorCalo, Victor M.en
dc.date.accessioned2015-05-04T16:26:58Zen
dc.date.available2015-05-04T16:26:58Zen
dc.date.issued2013-05en
dc.identifier.citationDynEarthSol2D: An efficient unstructured finite element method to study long-term tectonic deformation 2013, 118 (5):2429 Journal of Geophysical Research: Solid Earthen
dc.identifier.issn21699313en
dc.identifier.doi10.1002/jgrb.50148en
dc.identifier.urihttp://hdl.handle.net/10754/552164en
dc.description.abstractMany tectonic problems require to treat the lithosphere as a compressible elastic material, which can also flow viscously or break in a brittle fashion depending on the stress level applied and the temperature conditions. We present a flexible methodology to address the resulting complex material response, which imposes severe challenges on the discretization and rheological models used. This robust, adaptive, two-dimensional, finite element method solves the momentum balance and the heat equation in Lagrangian form using unstructured meshes. An implementation of this methodology is released to the public with the publication of this paper and is named DynEarthSol2D (available at http://bitbucket.org/tan2/dynearthsol2). The solver uses contingent mesh adaptivity in places where shear strain is focused (localization) and a conservative mapping assisted by marker particles to preserve phase and facies boundaries during remeshing. We detail the solver and verify it in a number of benchmark problems against analytic and numerical solutions from the literature. These results allow us to verify and validate our software framework and show its improved performance by an order of magnitude compared against an earlier implementation of the Fast Lagrangian Analysis of Continua algorithm.en
dc.relation.urlhttp://doi.wiley.com/10.1002/jgrb.50148en
dc.rightsArchived with thanks to Journal of Geophysical Research: Solid Earthen
dc.titleDynEarthSol2D: An efficient unstructured finite element method to study long-term tectonic deformationen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Geophysical Research: Solid Earthen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInstitute of Earth Sciences; Academia Sinica; Taipei; Taiwanen
dc.contributor.institutionInstitute for Geophysics, Jackson School of Geosciences, University of Texas, Austin, Texas, USA.en
dc.contributor.institutionCenter for Earthquake Research and Information, University of Memphis, Memphis, Tennessee, USAen
dc.contributor.institutionDepartment of Geological Sciences, Jackson School of Geosciences, University of Texas, Austin, Texas, USA.en
kaust.authorCalo, Victor M.en
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