A Stabilized Nitsche Fictitious Domain Method for the Stokes Problem
2014 (English)In: Journal of Scientific Computing, ISSN 0885-7474, E-ISSN 1573-7691, Vol. 61, no 3, 604-628 p.Article in journal (Refereed) Published
We present a novel finite element method for the Stokes problem on fictitious domains. We prove inf-sup stability, optimal order convergence and uniform boundedness of the condition number of the discrete system. The finite element formulation is based on a stabilized Nitsche method with ghost penalties for the velocity and pressure to obtain stability in the presence of small cut elements. We demonstrate for the first time the applicability of the Nitsche fictitious domain method to three-dimensional Stokes problems. We further discuss a general, flexible and freely available implementation of the method and present numerical examples supporting the theoretical results.
Place, publisher, year, edition, pages
2014. Vol. 61, no 3, 604-628 p.
Fictitious domain, Stokes problem, Stabilized finite element methods, Nitsche's method
IdentifiersURN: urn:nbn:se:umu:diva-96797DOI: 10.1007/s10915-014-9838-9ISI: 000343821300007OAI: oai:DiVA.org:umu-96797DiVA: diva2:770602