Dual permeability variably saturated flow and contaminant transport modeling of a nuclear waste repository with capillary barrier protection

This paper presents a new release of the DRUtES computer program, a finite element numerical solver in one and two dimensions of flow and contaminant transport in a dual porosity variably saturated porous medium. The main part of this paper evaluates the capillary barrier based structure on the Rich...

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Bibliographic Details
Published in:Applied mathematics and computation 2013-03, Vol.219 (13), p.7127-7138
Main Authors: Kuráž, Michal, Mayer, Petr, Havlíček, Vojtěch, Pech, Pavel, Pavlásek, Jirka
Format: Article
Language:English
Subjects:
Convection dispersion reaction equation
Distinct unsaturated hydraulic properties
Matrix balancing
Problem conditionality
Richards equation
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Summary:This paper presents a new release of the DRUtES computer program, a finite element numerical solver in one and two dimensions of flow and contaminant transport in a dual porosity variably saturated porous medium. The main part of this paper evaluates the capillary barrier based structure on the Richard – Litoměřice nuclear waste facility in the Czech Republic. The barrier structure is evaluated for various cases under normal regime flow conditions and under emergency conditions caused by intense infiltration. The capillary barrier is based on the unsaturated hydraulic properties of gravel. A failure of the barrier function due to saturation is successfully simulated, and is presented here.
ISSN:0096-3003
1873-5649
DOI:10.1016/j.amc.2011.08.109