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dc.contributor.authorHauck, Moritz-
dc.contributor.authorAizinger, Vadym-
dc.contributor.authorFrank, Florian-
dc.contributor.authorHajduk, Hennes-
dc.contributor.authorRupp, Andreas-
dc.date.accessioned2020-04-30T15:14:57Z-
dc.date.available2020-04-30T15:14:57Z-
dc.date.issued2020-04-
dc.identifier.issn2190-1767-
dc.identifier.urihttp://hdl.handle.net/2003/39095-
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-21013-
dc.description.abstractThis work presents an enriched Galerkin (EG) discretization for the two-dimensional shallow-water equations. The EG finite element spaces are obtained by extending the approximation spaces of the classical finite elements by discontinuous functions supported on elements. The simplest EG space is constructed by enriching the piecewise linear continuous Galerkin space with discontinuous, element-wise constant functions. Similarly to discontinuous Galerkin (DG) discretizations, the EG scheme is locally conservative, while, in multiple space dimensions, the EG space is significantly smaller than that of the DG method. This implies a lower number of degrees of freedom compared to the DG method. The EG discretization presented for the shallow-water equations is well-balanced, in the sense that it preserves lake-at-rest configurations. We evaluate the method’s robustness and accuracy using various analytical and realistic benchmarks and compare the results to those obtained using the DG method. Finally, we briefly discuss implementation aspects of the EG method within our MATLAB / GNU Octave framework FESTUNG.en
dc.language.isoen-
dc.relation.ispartofseriesErgebnisberichte des Instituts für Angewandte Mathematik;630-
dc.subjectenriched Galerkinen
dc.subjectocean modelingen
dc.subjectlocal conservationen
dc.subjectdiscontinuous Galerkinen
dc.subjectshallow-water equationsen
dc.subjectfinite elementsen
dc.subject.ddc610-
dc.titleEnriched Galerkin method for the shallow-water equationsen
dc.typeText-
dc.type.publicationtypepreprint-
dc.subject.rswkGalerkin-Methodede
dcterms.accessRightsopen access-
eldorado.secondarypublicationfalse-
Appears in Collections:Ergebnisberichte des Instituts für Angewandte Mathematik

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