Nuclear Waste Disposal Simulations: Couplex Test Cases: Simulation of Transport Around a Nuclear Waste Disposal Site: The COUPLEX Test Cases (Editors: Alain Bourgeat and Michel Kern)

Authors: H. Hoteit¹; Ph. Ackerer²; R. Mosé¹

Source: Computational Geosciences, Volume 8, Number 2, 2004 , pp. 99-124(26)

Publisher: Springer

Buy & download fulltext article:

Price: $47.00 plus tax (Refund Policy)

Abstract:

We give some results obtained for the Couplex test cases proposed by the ANDRA. In this paper our aim is twofold. Firstly, to compute the release of nuclides out of the repository by concentrating on the 3D near field (Couplex 2). The simulation of the transport phenomena takes into account the dissolution of the glass containers and congruent emissions of the radio-nuclides including filiation chains and some simplified chemistry. Secondly, it is to use the near field computations in order to simulate the nuclide migrations in a 2D far field (Couplex 3). Coupling in between the two simulations takes into consideration the periodicity of the disposal modules and the geometry of the repository described in Couplex 1. The mixed finite element and discontinuous Galerkin methods are used to solve the convection–diffusion equations. In order to handle the nonlinear precipitation/dissolution term, we developed a new iterative technique that combines Picard and Newton–Raphson methods.

Keywords: ANDRA-Couplex; discontinuous Galerkin method; flow and reactive transport in porous media; mixed finite elements; time splitting technique

Document Type: Research article

DOI: http://dx.doi.org/10.1023/B:COMG.0000035074.37722.71

Affiliations: 1: Institut de Mécanique des Fluides et des Solides, CNRS/UMR 7507, 2 rue Boussingault, 67000 Strasbourg, France 2: Institut de Mécanique des Fluides et des Solides, CNRS/UMR 7507, 2 rue Boussingault, 67000 Strasbourg, France, Email: philippe.ackerer@imfs.u-strasbg.fr

Publication date: 2004-01-01