par Irimie, Simona Emilia ;Bouillard, Philippe
Référence Comptes Rendus de l'Academie de Sciences - Serie IIb: Mecanique, Physique, Chimie, Astronomie, 328, 1, page (67-71)
Publication Publié, 2000-01
Article révisé par les pairs
Résumé : The finite element solution of Helmholtz equation is dispersive and the existent a posteriori error estimators underestimate the pollution error implied by this phenomenon. In this paper, a new type of residual estimator for the Helmholtz operator is proposed and tested on a one-dimensional model problem. The numerical results show that the error is correctly estimated but new difficulties appear in the exact evaluation of problem dependent constants. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

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