• Medientyp: Sonstige Veröffentlichung; E-Artikel
  • Titel: An overlapping additive Schwarz preconditioner for boundary element approximations to the Laplace screen and Lamé crack problems
  • Beteiligte: Tran, T. [VerfasserIn]; Stephan, E.P. [VerfasserIn]
  • Erschienen: Berlin : De Gruyter, 2004
  • Erschienen in: Journal of Numerical Mathematics 12 (2004), Nr. 4
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/3103; https://doi.org/10.1163/1569395042571265
  • ISSN: 1570-2820
  • Schlagwörter: Approximation theory ; Laplace transforms ; Boundary conditions ; Finite element method ; Set theory ; Integral equations ; Additive Schwarz ; Overlapping ; H version ; Galerkin methods ; Galerkin boundary element method ; Boundary element method ; preconditioned conjugate gradient ; Problem solving
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  • Beschreibung: We study a two-level overlapping additive Schwarz preconditioner for the h-version of the Galerkin boundary element method when used to solve hypersingular integral equations of the first kind on an open surface in ℝ3. These integral equations result from Neumann problems for the Laplace and Lamé equations in the exterior of the surface. We prove that the condition number of the preconditioned system is bounded by O(1 + log2(H/δ)), where H denotes the diameter of the subdomains and δ the size of the overlap.
  • Zugangsstatus: Freier Zugang