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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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Generalized monotone schemes, discrete paths of extrema, and discrete entropy conditions
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by Philippe G. LeFloch and Jian-Guo Liu PDF
Math. Comp. 68 (1999), 1025-1055 Request permission

Abstract:

Solutions of conservation laws satisfy the monotonicity property: the number of local extrema is a non-increasing function of time, and local maximum/minimum values decrease/increase monotonically in time. This paper investigates this property from a numerical standpoint. We introduce a class of fully discrete in space and time, high order accurate, difference schemes, called generalized monotone schemes. Convergence toward the entropy solution is proven via a new technique of proof, assuming that the initial data has a finite number of extremum values only, and the flux-function is strictly convex. We define discrete paths of extrema by tracking local extremum values in the approximate solution. In the course of the analysis we establish the pointwise convergence of the trace of the solution along a path of extremum. As a corollary, we obtain a proof of convergence for a MUSCL-type scheme that is second order accurate away from sonic points and extrema.
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Additional Information
  • Philippe G. LeFloch
  • Affiliation: Centre de Mathématiques Appliquées and Centre National de la Recherche Scientifique, URA 756, Ecole Polytechnique, 91128 Palaiseau, France
  • Email: lefloch@cmapx.polytechnique.fr
  • Jian-Guo Liu
  • Affiliation: Department of Mathematics, Temple University, Philadelphia, Pennsylvania 19122
  • MR Author ID: 233036
  • ORCID: 0000-0002-9911-4045
  • Email: jliu@math.temple.edu
  • Received by editor(s): May 5, 1997
  • Received by editor(s) in revised form: November 10, 1997
  • Published electronically: February 13, 1999
  • Additional Notes: The first author was supported in parts by the Centre National de la Recherche Scientifique, and by the National Science Foundation under grants DMS-88-06731, DMS 94-01003 and DMS 95-02766, and a Faculty Early Career Development award (CAREER) from NSF. The second author was partially supported by DOE grant DE-FG02 88ER-25053.
  • © Copyright 1999 American Mathematical Society
  • Journal: Math. Comp. 68 (1999), 1025-1055
  • MSC (1991): Primary 35L65, 65M12
  • DOI: https://doi.org/10.1090/S0025-5718-99-01062-5
  • MathSciNet review: 1627801