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 2024 MCQ for Mathematics of Computation is 1.78.

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Towards a fully well-balanced and entropy-stable scheme for the Euler equations with gravity: preserving isentropic steady solutions
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by Christophe Berthon, Victor Michel-Dansac and Andrea Thomann;
Math. Comp.
DOI: https://doi.org/10.1090/mcom/4088
Published electronically: April 17, 2025

Abstract:

The present work concerns the derivation of a numerical scheme to approximate weak solutions of the Euler equations with a gravitational source term. The designed scheme is proved to be fully well-balanced since it is able to exactly preserve all moving equilibrium solutions, as well as the corresponding steady solutions at rest obtained when the velocity vanishes. Moreover, the proposed scheme is entropy-stable since it satisfies all fully discrete entropy inequalities. In addition, in order to satisfy the required admissibility of the approximate solutions, the positivity of both approximate density and pressure is established. Several numerical experiments attest the relevance of the developed numerical method. An extension to two-dimensional problems is given, applying the one-dimensional framework direction by direction on Cartesian grids.
References
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Bibliographic Information
  • Christophe Berthon
  • Affiliation: Laboratoire de Mathématiques Jean Leray, CNRS UMR 6629, Universitd́e Nantes, 2 rue de la Houssinire, BP 92208, 44322 Nantes Cedex 3, France
  • MR Author ID: 654277
  • Email: christophe.berthon@univ-nantes.fr
  • Victor Michel-Dansac
  • Affiliation: Université de Strasbourg, CNRS, Inria, IRMA, F-67000 Strasbourg, France
  • MR Author ID: 1088168
  • ORCID: 0000-0002-3859-8517
  • Email: victor.michel-dansac@inria.fr
  • Andrea Thomann
  • Affiliation: Université de Strasbourg, CNRS, Inria, IRMA, F-67000 Strasbourg, France
  • MR Author ID: 1188929
  • ORCID: 0000-0001-9195-0404
  • Email: andrea.thomann@inria.fr
  • Received by editor(s): June 20, 2024
  • Received by editor(s) in revised form: January 31, 2025
  • Published electronically: April 17, 2025
  • © Copyright 2025 American Mathematical Society
  • Journal: Math. Comp.
  • MSC (2020): Primary 65M08, 65M12, 76M12
  • DOI: https://doi.org/10.1090/mcom/4088