Adaptive finite element methods for elliptic problems : abstract framework and applications

Nicaise, Serge; Cochez-Dhondt, Sarah

ESAIM: Modélisation mathématique et analyse numérique, Tome 44 (2010) no. 3, pp. 485-508.

We consider a general abstract framework of a continuous elliptic problem set on a Hilbert space V that is approximated by a family of (discrete) problems set on a finite-dimensional space of finite dimension not necessarily included into V. We give a series of realistic conditions on an error estimator that allows to conclude that the marking strategy of bulk type leads to the geometric convergence of the adaptive algorithm. These conditions are then verified for different concrete problems like convection-reaction-diffusion problems approximated by a discontinuous Galerkin method with an estimator of residual type or obtained by equilibrated fluxes. Numerical tests that confirm the geometric convergence are presented.

Classification : 65N30, 65N15, 65N50
Mots clés : a posteriori estimator, adaptive FEM, discontinuous Galerkin FEM

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