On local super-penalization of interior penalty discontinuous Galerkin methods

Cangiani, Andrea, Chapman, John, Georgoulis, Emmanuil and Jensen, Max (2014) On local super-penalization of interior penalty discontinuous Galerkin methods. International Journal of Numerical Analysis & Modeling, 11 (3). pp. 478-495. ISSN 1705-5105

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We prove in an abstract setting that standard (continuous) Galerkin finite element approximations are the limit of interior penalty discontinuous Galerkin approximations as the penalty parameter tends to infinity. We apply this result to equations of non-negative characteristic form and the non-linear, time dependent system of incompressible miscible displacement. Moreover, we investigate varying the penalty parameter on only a subset of a triangulation and the effects of local super-penalization on the stability of the method, resulting in a partly continuous, partly discontinuous method in the limit. An iterative automatic procedure is also proposed for the determination of the continuous region of the domain without loss of stability of the method.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Mathematics
Subjects: Q Science > QA Mathematics > QA0297 Numerical analysis
Depositing User: Max Jensen
Date Deposited: 02 Jun 2014 09:52
Last Modified: 02 Jul 2019 22:48
URI: http://sro.sussex.ac.uk/id/eprint/48865

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