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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 monotone finite element scheme for convection-diffusion equations
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by Jinchao Xu and Ludmil Zikatanov PDF
Math. Comp. 68 (1999), 1429-1446 Request permission

Abstract:

A simple technique is given in this paper for the construction and analysis of a class of finite element discretizations for convection-diffusion problems in any spatial dimension by properly averaging the PDE coefficients on element edges. The resulting finite element stiffness matrix is an $M$-matrix under some mild assumption for the underlying (generally unstructured) finite element grids. As a consequence the proposed edge-averaged finite element scheme is particularly interesting for the discretization of convection dominated problems. This scheme admits a simple variational formulation, it is easy to analyze, and it is also suitable for problems with a relatively smooth flux variable. Some simple numerical examples are given to demonstrate its effectiveness for convection dominated problems.
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Additional Information
  • Jinchao Xu
  • Affiliation: Center for Computational Mathematics and Applications, Department of Mathematics, Pennsylvania State University, University Park, Pennsylvania 16802
  • MR Author ID: 228866
  • Email: xu@math.psu.edu
  • Ludmil Zikatanov
  • Affiliation: Center for Computational Mathematics and Applications, Department of Mathematics, Pennsylvania State University, University Park, Pennsylvania 16802
  • Email: ltz@math.psu.edu
  • Received by editor(s): May 6, 1996
  • Received by editor(s) in revised form: December 16, 1997
  • Published electronically: May 20, 1999
  • Additional Notes: The first author’s work was partially supported by NSF DMS94-03915-1 and NSF DMS-9706949 through Penn State, and by NSF ASC-92-01266 and ONR-N00014-92-J-1890 through UCLA
    The second author’s work was partially supported by the Bulgarian Ministry of Education and Science Grant I–504/95, by NSF Grant Int-95–06184 and ONR-N00014-92-J-1890 through UCLA, and also by the Center for Computational Mathematics and Applications of Pennsylvania State University.
  • © Copyright 1999 American Mathematical Society
  • Journal: Math. Comp. 68 (1999), 1429-1446
  • MSC (1991): Primary 65N30, 65N15
  • DOI: https://doi.org/10.1090/S0025-5718-99-01148-5
  • MathSciNet review: 1654022