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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 convergent staggered scheme for the variable density incompressible Navier-Stokes equations
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by J. C. Latché and K. Saleh PDF
Math. Comp. 87 (2018), 581-632 Request permission

Abstract:

In this paper, we analyze a scheme for the time-dependent variable density Navier-Stokes equations. The algorithm is implicit in time, and the space approximation is based on a low-order staggered non-conforming finite element, the so-called Rannacher-Turek element. The convection term in the momentum balance equation is discretized by a finite volume technique, in such a way that a solution obeys a discrete kinetic energy balance, and the mass balance is approximated by an upwind finite volume method. We first show that the scheme preserves the stability properties of the continuous problem ($\mathrm {L}^\infty$-estimate for the density, $\mathrm {L}^\infty (\mathrm {L}^2)$- and $\mathrm {L}^2(\mathrm {H}^1)$-estimates for the velocity), which yields, by a topological degree technique, the existence of a solution. Then, invoking compactness arguments and passing to the limit in the scheme, we prove that any sequence of solutions (obtained with a sequence of discretizations the space and time step of which tend to zero) converges up to the extraction of a subsequence to a weak solution of the continuous problem.
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Additional Information
  • J. C. Latché
  • Affiliation: Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France
  • MR Author ID: 715367
  • Email: jean-claude.latche@irsn.fr
  • K. Saleh
  • Affiliation: Université de Lyon, CNRS UMR 5208, Université Lyon 1, Institut Camille Jordan, 43 bd 11 novembre 1918, F-69622 Villeurbanne cedex, France
  • MR Author ID: 960776
  • Email: saleh@math.univ-lyon1.fr
  • Received by editor(s): February 24, 2014
  • Received by editor(s) in revised form: February 21, 2015, February 29, 2016, and October 28, 2016
  • Published electronically: August 7, 2017
  • © Copyright 2017 American Mathematical Society
  • Journal: Math. Comp. 87 (2018), 581-632
  • MSC (2010): Primary 35Q30, 35Q55, 65N12, 76M10, 76M12
  • DOI: https://doi.org/10.1090/mcom/3241
  • MathSciNet review: 3739211