Coupling OpenFOAM(R) with BoSSS, a discontinuous Galerkin solver written in C#

Dario Klingenberg; Florian Kummer; Holger Marschall; Hrvoje Jasak

Coupling OpenFOAM(R) with BoSSS, a discontinuous Galerkin solver written in C#

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arxiv 2310.03573 v1 pith:CO7UXLXR submitted 2023-10-05 math.NA cs.NA

Dario Klingenberg , Hrvoje Jasak , Holger Marschall , Florian Kummer This is my paper · ORCID

classification math.NAcs.NA

keywords bosssopenfoamsolvedcahn-hilliardcouplingdiscontinuousequationfoam-dg

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In this article, we present the foam-dg project, which provides a bridge between OpenFOAM(R) and the high-order DG (discontinuous Galerkin) framework BoSSS. Thanks to the flexibility of the coupling approach, mixed calculations where some parts of the equation system are solved in OpenFOAM(R) and others are solved in BoSSS are easily possible. This is showcased using the convective Cahn-Hilliard equation, where the Cahn-Hilliard part is solved in BoSSS and the Navier-Stokes part is solved in OpenFOAM(R). The obtained results appear reasonable, though the main focus of this paper is to present and document the foam-dg project rather than on quantitative results.

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