14-17 May 2018
New Orleans
US/Central timezone

Hybrid-dimensional two-phase flow in fractured porous Media with interfacial pressure and saturation unknowns

16 May 2018, 16:55
2m
New Orleans

New Orleans

Poster + 3 Minute Pitch MS 2.13: Advances in numerical modelling of multiphase flow and transport in fractured porous media Parallel 8-C

Speaker

Roland Masson (LJAD)

Description

We consider in this work, the extension to two-phase Darcy flows of the discontinuous pressure models in which the (d-1)-dimensional flow in the fractures is coupled with the d-dimensional flow in the matrix.The model accounts accurately for gravity effects inside the fractures, for discontinuous capillary pressure curves at the matrix fracture (mf) interfaces and for both drains and barriers. This can be achieved thanks to interfacial pressure and saturation unknowns accounting for the nonlinear two-phase Darcy flux conservation equations at mf interfaces. The first objective of this talk is to compare this model with more usual hybrid-dimensional approaches based on the elimination of the interfacial phase pressures using the linear single phase Darcy flux conservation equation at the mf interfaces for each phase or alternatively the pressure continuity assumption in the case of fractures acting as drains. Our second objective is to discuss discretization and solution strategies for this type of models.

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Primary authors

Joubine Aghili (University Côte d'Azur, LJAD-Inria-CNRS) Konstantin Brenner (LJAD, Université de Nice Sophia Antipolis) Julian Hennicker (University of Geneva) Roland Masson (LJAD)

Presentation Materials