A posteriori error analysis of an augmented mixed finite element method for Darcy flow
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A posteriori error analysis of an augmented mixed finite element method for Darcy flowData
2015-01Cita bibliográfica
T. P. Barrios, J. M. Cascón, M. González, A posteriori error analysis of an augmented mixed finite element method for Darcy flow. Computer Methods in Applied Mechanics and Engineering, 283 (Jan 2015) 909-922.
Resumo
[Abstract] We develop an a posteriori error analysis of residual type of stabilized mixed finite element method for Darcy flow. The stabilized formulation is obtained by adding to the standard dual-mixed approach suitable residual type terms arising from Darcy’s law and the mass conservation equation. We derive sufficient conditions on the stabilization parameters that guarantee that the
augmented variational formulation and the corresponding Galerkin scheme are well-posed. Then, we obtain a simple a posteriori error estimator and prove that it is reliable and locally efficient. Finally, we provide several numerical experiments that illustrate the theoretical results and support the use of the corresponding adaptive algorithm in practice.
Palabras chave
Darcy flow
Mixed finite element
Stabilization
A posteriori error estimator
Mixed finite element
Stabilization
A posteriori error estimator
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Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional
ISSN
0045-7825