Show simple item record

dc.relation.isnodouble63542*
dc.contributor.authorGhommem, M.
dc.contributor.authorPresho, M.
dc.contributor.authorCalo, Victor
dc.contributor.authorEfendiev, Y.
dc.date.accessioned2017-06-23T03:01:32Z
dc.date.available2017-06-23T03:01:32Z
dc.date.created2017-06-19T03:39:37Z
dc.date.issued2013
dc.identifier.citationGhommem, M. and Presho, M. and Calo, V. and Efendiev, Y. 2013. Mode decomposition methods for flows in high-contrast porous media. Global-local approach. Journal of Computational Physics. 253: pp. 226-238.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/53841
dc.identifier.doi10.1016/j.jcp.2013.06.033
dc.description.abstract

In this paper, we combine concepts of the generalized multiscale finite element method (GMsFEM) and mode decomposition methods to construct a robust global-local approach for model reduction of flows in high-contrast porous media. This is achieved by implementing Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) techniques on a coarse grid computed using GMsFEM. The resulting reduced-order approach enables a significant reduction in the flow problem size while accurately capturing the behavior of fully-resolved solutions. We consider a variety of high-contrast coefficients and present the corresponding numerical results to illustrate the effectiveness of the proposed technique. This paper is a continuation of our work presented in Ghommem et al. (2013) [1] where we examine the applicability of POD and DMD to derive simplified and reliable representations of flows in high-contrast porous media on fully resolved models. In the current paper, we discuss how these global model reduction approaches can be combined with local techniques to speed-up the simulations. The speed-up is due to inexpensive, while sufficiently accurate, computations of global snapshots.

dc.publisherAcademic Press
dc.titleMode decomposition methods for flows in high-contrast porous media. Global-local approach
dc.typeJournal Article
dcterms.source.volume253
dcterms.source.startPage226
dcterms.source.endPage238
dcterms.source.issn0021-9991
dcterms.source.titleJournal of Computational Physics
curtin.departmentDepartment of Applied Geology
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record