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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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Convolution quadrature for the wave equation with a nonlinear impedance boundary condition
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by Lehel Banjai and Alexander Rieder PDF
Math. Comp. 87 (2018), 1783-1819 Request permission

Abstract:

A rarely exploited advantage of time-domain boundary integral equations compared to their frequency counterparts is that they can be used to treat certain nonlinear problems. In this work we investigate the scattering of acoustic waves by a bounded obstacle with a nonlinear impedance boundary condition. We describe a boundary integral formulation of the problem and prove without any smoothness assumptions on the solution the convergence of a full discretization: Galerkin in space and convolution quadrature in time. If the solution is sufficiently regular, we prove that the discrete method converges at optimal rates. Numerical evidence in 3D supports the theory.
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Additional Information
  • Lehel Banjai
  • Affiliation: The Maxwull Institute for Mathematical Sciences, School of Mathematical & Computer Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
  • Email: l.banjai@hw.ac.uk
  • Alexander Rieder
  • Affiliation: Institute for Analysis and Scientific Computing (Inst. E 101), Vienna University of Technology, Wiedner Hauptstrasse 8-10, 1040 Wien, Austria
  • MR Author ID: 1126143
  • Email: alexander.rieder@tuwien.ac.at
  • Received by editor(s): April 13, 2016
  • Received by editor(s) in revised form: February 1, 2017
  • Published electronically: October 4, 2017
  • Additional Notes: This research was supported by the Austrian Science Fund (FWF) through the doctoral school “Dissipation and Dispersion in Nonlinear PDEs” (project W1245, A.R.).
  • © Copyright 2017 American Mathematical Society
  • Journal: Math. Comp. 87 (2018), 1783-1819
  • MSC (2010): Primary 65M38, 65M12, 65R20
  • DOI: https://doi.org/10.1090/mcom/3279
  • MathSciNet review: 3787392