Abstract
In this paper we present an a-posteriori error estimator for the mixed formulation of a linear parabolic problem, used for designing an efficient adaptive algorithm. Our space-time discretization consists of lowest order Raviart-Thomas finite element over graded meshes and discontinuous Galerkin method with variable time step. Finally, several examples show that the proposed method is efficient and reliable.
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Cascón, J., Ferragut, L. & Asensio, M. Space-Time adaptive algorithm for the mixed parabolic problem. Numer. Math. 103, 367–392 (2006). https://doi.org/10.1007/s00211-006-0677-y
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DOI: https://doi.org/10.1007/s00211-006-0677-y