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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.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Stationarity preserving schemes for multi-dimensional linear systems
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by Wasilij Barsukow HTML | PDF
Math. Comp. 88 (2019), 1621-1645

Abstract:

There is a qualitative difference between one-dimensional and multi-dimensional solutions to the Euler equations: new features that arise are vorticity and a nontrivial incompressible (low Mach number) limit. They present challenges to finite volume methods. It seems that an important step in this direction is to first study the new features for the multi-dimensional acoustic equations. There exists an analogue of the low Mach number limit for this system and its vorticity is stationary.

It is shown that a scheme that possesses a stationary discrete vorticity (vorticity preserving) also has stationary states that are discretizations of all the analytic stationary states. This property is termed stationarity preserving. Both these features are not generically fulfilled by finite volume schemes; in this paper a condition is derived that determines whether a scheme is stationarity preserving (or, equivalently, vorticity preserving) on a Cartesian grid.

Additionally, this paper also uncovers a previously unknown connection to schemes that comply with the low Mach number limit. Truly multi-dimensional schemes are found to arise naturally and it is shown that a multi-dimensional discrete divergence previously discussed in the literature is the only possible stationarity preserving one (in a certain class).

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Additional Information
  • Wasilij Barsukow
  • Affiliation: Institute for Mathematics, Würzburg University, Emil-Fischer-Straße 40, 97074 Würzburg, Germany
  • Email: w.barsukow@mathematik.uni-wuerzburg.de
  • Received by editor(s): December 4, 2017
  • Received by editor(s) in revised form: May 23, 2018
  • Published electronically: November 13, 2018
  • Additional Notes: The author was supported by the German National Academic Foundation.
  • © Copyright 2018 Wasilij Barsukow
  • Journal: Math. Comp. 88 (2019), 1621-1645
  • MSC (2010): Primary 35L40, 65M06, 65M08, 39A70
  • DOI: https://doi.org/10.1090/mcom/3394
  • MathSciNet review: 3925479