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- Title
Mixed finite element discretization and Newton iteration for a reactive contaminant transport model with nonequilibrium sorption: convergence analysis and error estimates.
- Authors
Radu, Florin A.; Pop, Iuliu Sorin
- Abstract
We present a numerical scheme for reactive contaminant transport with nonequilibrium sorption in porous media. The mass conservative scheme is based on Euler implicit, mixed finite elements, and Newton method. We consider the case of a Freundlich-type sorption. In this case, the sorption isotherm is not Lipschitz but just Hölder continuous. To deal with this, we perform a regularization step. The convergence of the scheme is analyzed. An explicit order of convergence depending only on the regularization parameter, the time step, and the mesh size is derived. We give also a sufficient condition for the quadratic convergence of the Newton method. Finally, relevant numerical results are presented.
- Subjects
FINITE element method; POROUS materials; ATMOSPHERIC temperature; NONEQUILIBRIUM thermodynamics; STOCHASTIC convergence
- Publication
Computational Geosciences, 2011, Vol 15, Issue 3, p431
- ISSN
1420-0597
- Publication type
Article
- DOI
10.1007/s10596-010-9213-3