The computation of exterior wave problems at low wave numbers can become prohibitively expensive when higher circumferential modes are significant. An analysis of the effect of wave number on scattering problems, with local absorbing boundary conditions specified on simple shapes as on-surface radiation conditions, provides guidelines for satisfactory performance. Excessive computational cost may be avoided for most practical applications. (C) 2003 IMACS. Published by Elsevier B.V. All rights reserved.
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Team Project Mag 3D, Bordeaux Sud Ouest Res Ctr, INRIA, Bordeaux, France
Univ Pau & Pays Adour, IPRA Ave Univ, CNRS, UMR 5142,Lab Math Appl, F-64013 Pau, FranceCalif State Univ Northridge, Dept Math, Northridge, CA 91330 USA
Barucq, H.
Djellouli, R.
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Calif State Univ Northridge, Dept Math, Northridge, CA 91330 USA
Team Project Mag 3D, Bordeaux Sud Ouest Res Ctr, INRIA, Bordeaux, FranceCalif State Univ Northridge, Dept Math, Northridge, CA 91330 USA
Djellouli, R.
Saint-Guirons, A.
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Team Project Mag 3D, Bordeaux Sud Ouest Res Ctr, INRIA, Bordeaux, France
Univ Pau & Pays Adour, IPRA Ave Univ, CNRS, UMR 5142,Lab Math Appl, F-64013 Pau, FranceCalif State Univ Northridge, Dept Math, Northridge, CA 91330 USA