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Encapsulated generalized summation-by-parts formulations for curvilinear and non-conforming meshes
Linköping University, Department of Mathematics, Applied Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-5177-1214
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Mathematics, Applied Mathematics.ORCID iD: 0000-0002-5902-1522
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Mathematics, Applied Mathematics. University of Johannesburg, South Africa.ORCID iD: 0000-0002-7972-6183
2024 (English)In: Journal of Computational Physics, ISSN 0021-9991, E-ISSN 1090-2716, Vol. 498, article id 112699Article in journal (Refereed) Published
Abstract [en]

We extend the construction of so-called encapsulated global summation-by-parts operators to the general case of a mesh which is not boundary conforming. Owing to this development, energy stable discretizations of nonlinear and variable coefficient initial boundary value problems can be formulated in simple and straightforward ways using high-order accurate operators of generalized summation-by-parts type. Encapsulated features on a single computational block or element may include polynomial bases, tensor products as well as curvilinear coordinate transformations. Moreover, through the use of inner product preserving interpolation or projection, the global summation-by-parts property is extended to arbitrary multi-block or multi-element meshes with non-conforming nodal interfaces.

Place, publisher, year, edition, pages
ACADEMIC PRESS INC ELSEVIER SCIENCE , 2024. Vol. 498, article id 112699
Keywords [en]
Summation-by-parts; Global difference operators; Curvilinear coordinates; Non-conforming interfaces; Pseudo-spectral methods
National Category
Computational Mathematics
Identifiers
URN: urn:nbn:se:liu:diva-199530DOI: 10.1016/j.jcp.2023.112699ISI: 001132589300001OAI: oai:DiVA.org:liu-199530DiVA, id: diva2:1818363
Funder
Swedish Research CouncilAvailable from: 2023-12-11 Created: 2023-12-11 Last updated: 2024-06-11

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Lundquist, TomasWinters, Andrew RossNordström, Jan

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