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Fictitious domain methods using cut elements: III. A stabilized Nitsche method for Stokes’ problem
University College London.
Jönköping University, School of Engineering, JTH, Mechanical Engineering. Jönköping University, School of Engineering, JTH. Research area Product Development - Simulation and Optimization.
2014 (English)In: Mathematical Modelling and Numerical Analysis, ISSN 0764-583X, Vol. 48, no 3, 859-874 p.Article in journal (Refereed) Published
Abstract [en]

We extend the classical Nitsche type weak boundary conditions to a fictitious domain setting. An additional penalty term, acting on the jumps of the gradients over element faces in the interface zone, is added to ensure that the conditioning of the matrix is independent of how the boundary cuts the mesh. Optimal a priori error estimates in the H 1- and L 2-norms are proved as well as an upper bound on the condition number of the system matrix.

Place, publisher, year, edition, pages
2014. Vol. 48, no 3, 859-874 p.
National Category
Fluid Mechanics and Acoustics Computational Mathematics
Identifiers
URN: urn:nbn:se:hj:diva-23717DOI: 10.1051/m2an/2013123ISI: 000335388600009Scopus ID: 2-s2.0-84857789102Local ID: JTHProduktutvecklingISOAI: oai:DiVA.org:hj-23717DiVA: diva2:713397
Available from: 2014-04-22 Created: 2014-04-22 Last updated: 2015-06-29Bibliographically approved

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Hansbo, Peter
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