Two phase partially miscible flow and transport modeling in porous media ; application to gas migration in a nuclear waste repository

Alain Bourgeat (1) , Mladen Jurak (2) , Farid Smaï (1)

1 ICJ - Institut Camille Jordan
2 Department of Mathematics [Zagreb]

We derive a compositional compressible two-phase, liquid and gas, flow model for numerical simulations of hydrogen migration in deep geological repository for radioactive waste. This model includes capillary effects and the gas high diffusivity. Moreover, it is written in variables (total hydrogen mass density and liquid pressure) chosen in order to be consistent with gas appearance or disappearance. We discuss the well possedness of this model and give some computational evidences of its adequacy to simulate gas generation in a water saturated repository.

Mots clés: Two-phase flow; porous medium; modeling; underground nuclear waste management

Domaines: Physique mathématique [math-ph]

Alain Bourgeat, Mladen Jurak, Farid Smaï. Two phase partially miscible flow and transport modeling in porous media ; application to gas migration in a nuclear waste repository. 2008. ⟨hal-00259674⟩