A continuum voxel approach to model flow in 3D fault networks: a new way to obtain up-scaled hydraulic conductivity tensors of grid cells

André Fourno 1 Christophe Grenier 2 Abdelhakim Benabderrahmane 3 Frédérick Delay 4
1 IFPEN - IFP Energies nouvelles
2 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
3 ANDRA - Agence Nationale pour la Gestion des Déchets Radioactifs
4 LHyGeS - Laboratoire d'Hydrologie et de Géochimie de Strasbourg
Abstract : Modelling transfers in fractured media remains a challenging task due to the complexity of the system geometry, high contrasts and large uncertainties on flow and transport properties. In the literature, fractures are classically modelled by equivalent properties or are explicitly represented. The new Fracture Continuum Voxel Approach (FCVA), is a continuum approach partly able to represent fracture as discrete objects; the geometry of each fracture is represented on a regular meshing associated with a heterogeneous field of equivalent flow properties. The mesh-identification approach is presented for a regular grid. The derivation of equivalent voxel parameters is developed for flow simulated with a Mixed Hybrid Finite Element (MHFE) scheme. The FCVA is finally validated and qualified against some reference cases. The resulting method investigates multi-scaled fracture networks: a small scale homogenized by classical methods and large discrete objects as that handled in the present work.
Keywords : Equivalent hydraulic conductivity tensors Mixed hybrid finite elements Up-scaling Fractured media
Document type :
Journal articles
Complete list of metadatas

Cited literature [49 references]  Display  Hide  Download
https://hal-ifp.archives-ouvertes.fr/hal-01738266
Contributor : Andre Fourno <>
Submitted on : Tuesday, March 20, 2018 - 1:38:05 PM
Last modification on : Monday, February 10, 2020 - 6:12:18 PM
Long-term archiving on: Tuesday, September 11, 2018 - 7:50:57 AM

File

voxel_approach_preprint.pdf
Files produced by the author(s)

Identifiers

Collections

IFP | CNRS | UVSQ | CEA | LSCE | CEA-DRF | INSU | SITE-ALSACE

Citation

André Fourno, Christophe Grenier, Abdelhakim Benabderrahmane, Frédérick Delay. A continuum voxel approach to model flow in 3D fault networks: a new way to obtain up-scaled hydraulic conductivity tensors of grid cells. Journal of Hydrology, Elsevier, 2013, 493, pp.68-80. ⟨10.1016/j.jhydrol.2013.04.010⟩. ⟨hal-01738266⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

147

Files downloads

228

Contact

Informations

CCSD