Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A cut finite element method for a model of pressure in fractured media
Department of Mathematics, University College London, Gower Street, London, WC1E 6BT, United Kingdom.
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0001-7352-1550
Department of Mathematics and Mathematical Statistics, Umeå University, Umeå, 901 87, Sweden.
2020 (English)In: Numerische Mathematik, ISSN 0029-599X, E-ISSN 0945-3245, Vol. 146, p. 783-818Article in journal (Refereed) Published
Abstract [en]

We develop a robust cut finite element method for a model of diffusion in fractured media consisting of a bulk domain with embedded cracks. The crack has its own pressure field and can cut through the bulk mesh in a very general fashion. Starting from a common background bulk mesh, that covers the domain, finite element spaces are constructed for the interface and bulk subdomains leading to efficient computations of the coupling terms. The crack pressure field also uses the bulk mesh for its representation. The interface conditions are a generalized form of conditions of Robin type previously considered in the literature which allows the modeling of a range of flow regimes across the fracture. The method is robust in the following way: (1) Stability of the formulation in the full range of parameter choices; and (2) Not sensitive to the location of the interface in the background mesh. We derive an optimal order a priori error estimate and present illustrating numerical examples.

Place, publisher, year, edition, pages
Springer, 2020. Vol. 146, p. 783-818
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-50973DOI: 10.1007/s00211-020-01157-5ISI: 000582991300001Scopus ID: 2-s2.0-85094659654Local ID: HOA JTH 2020;JTHMaterialISOAI: oai:DiVA.org:hj-50973DiVA, id: diva2:1500509
Funder
Swedish Research Council, 2018-05262,2017-03911,2013-4708Swedish Foundation for Strategic Research , AM13-0029Available from: 2020-11-12 Created: 2020-11-12 Last updated: 2025-10-13Bibliographically approved
In thesis
1. Finite Element Methods for Interface Problems
Open this publication in new window or tab >>Finite Element Methods for Interface Problems
2019 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis focuses on computationally efficient methods for flow in fractured porous media. Two approaches are presented where the interface is embedded on the underlying finite element mesh. The methods allow for representation of the interface geometry from the underlying discretization and with discontinuities across the interface. However, embedding interfaces raises stability concerns in which we alleviate using stabilization terms. The aim of this thesis is to present the basics of the two main approaches and to provide brief details on the mathematics involved.

Abstract [sv]

Denna avhandling fokuserar på effektiva beräkningsmetoder för flöde i porösa media med sprickor. Två tillvägagångssätt presenteras där sprickan tillåts skära det underliggande finita elementnätet. Sprickans inverkan på flödet tas om hand med hjälp av den underliggande diskretiseringen som tillåter diskontinuiteter. Med andra ord kan flöden modelleras med olika egenskaper; på var sida av sprickan, samt längs sprickan. Metoden tar även hand om instabilitet som uppstår dels på grund av godtyckliga skärningar av bakgrundselementen och dels på grund av olika materialegenskaper. Syftet med denna avhandling är att presentera grunderna för dessa metoder och ge grundläggande matematiska förklaringar.

Place, publisher, year, edition, pages
Jönköping: Jönköping University, School of Engineering, 2019. p. 45
Series
JTH Dissertation Series ; 44
Keywords
Finite Element Method, Interface, Embedded, CutFEM, Finita elementmetoden, Sprickor, CutFEM
National Category
Computational Mathematics Materials Engineering
Identifiers
urn:nbn:se:hj:diva-54570 (URN)978-91-87289-47-7 (ISBN)
Supervisors
Funder
Swedish Foundation for Strategic Research , AM13-0029
Available from: 2021-09-07 Created: 2021-09-07 Last updated: 2025-10-13Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Hansbo, Peter

Search in DiVA

By author/editor
Hansbo, Peter
By organisation
JTH, Materials and Manufacturing
In the same journal
Numerische Mathematik
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 379 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf