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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

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A continuous/discontinuous Galerkin method and a priori error estimates for the biharmonic problem on surfaces
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by Karl Larsson and Mats G. Larson PDF
Math. Comp. 86 (2017), 2613-2649 Request permission

Abstract:

We present a continuous/discontinuous Galerkin method for approximating solutions to a fourth order elliptic PDE on a surface embedded in $\mathbb {R}^3$. A priori error estimates, taking both the approximation of the surface and the approximation of surface differential operators into account, are proven in a discrete energy norm and in $L^2$ norm. This can be seen as an extension of the formalism and method originally used by Dziuk (1988) for approximating solutions to the Laplace–Beltrami problem, and within this setting this is the first analysis of a surface finite element method formulated using higher order surface differential operators. Using a polygonal approximation $\Gamma _h$ of an implicitly defined surface $\Gamma$ we employ continuous piecewise quadratic finite elements to approximate solutions to the biharmonic equation on $\Gamma$. Numerical examples on the sphere and on the torus confirm the convergence rate implied by our estimates.
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Additional Information
  • Karl Larsson
  • Affiliation: Department of Mathematics and Mathematical Statistics, Umeå University, SE-901 87 Umeå, Sweden
  • Email: karl.larsson@umu.se
  • Mats G. Larson
  • Affiliation: Department of Mathematics and Mathematical Statistics, Umeå University, SE-901 87 Umeå, Sweden
  • MR Author ID: 648688
  • Email: mats.larson@umu.se
  • Received by editor(s): January 19, 2015
  • Received by editor(s) in revised form: February 5, 2016, and April 26, 2016
  • Published electronically: March 30, 2017
  • Additional Notes: This research was supported in part by the Swedish Foundation for Strategic Research Grant No. AM13-0029, the Swedish Research Council Grant No. 2013-4708, and the Swedish strategic research programme eSSENCE
  • © Copyright 2017 American Mathematical Society
  • Journal: Math. Comp. 86 (2017), 2613-2649
  • MSC (2010): Primary 65N15, 65N30, 58J99
  • DOI: https://doi.org/10.1090/mcom/3179
  • MathSciNet review: 3667019