Finite element approximation of spectral acoustic problems on curved domains

  • Authors:
  • Erwin Hernández;Rodolfo Rodríguez

  • Affiliations:
  • Universidad Técnica Federico Santa María, Departamento de Matemática, Chile;Departamento de Ingeniería Matemática, GI2 MA, Chile

  • Venue:
  • Numerische Mathematik
  • Year:
  • 2004

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Abstract

This paper deals with the finite element approximation of the displacement formulation of the spectral acoustic problem on a curved non convex two-dimensional domain Ω. Convergence and error estimates are proved for Raviart-Thomas elements on a discrete polygonal domain Ωh ***inline equation*** Ω in the framework of the abstract spectral approximation theory. Similar results have been previously proved only for polygonal domains. Numerical tests confirming the theoretical results are reported.