Abstract
This is a theoretical study on the feasibility of replacing a medium containing heterogeneities with an equivalent homogeneous medium for the case of two-phase flow. The infiltration of dense nonaqueous phase liquids (DNAPL) in a water-saturated heterogeneous porous medium is investigated numerically. For two porous media with a periodic heterogeneity, the existence of a representative elementary volume (REV), related to the spatial scale of heterogeneities, is investigated. The upscaled permeabilities and constitutive relationships for the REV are numerically calculated and effects of heterogeneities are discussed. Numerical simulations are carried out for both heterogeneous and homogeneous representations of the considered porous media. Simulations with upscaled parameters reproduce the average behavior of the medium reasonably well.
| Original language | English |
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| Title of host publication | Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology |
| Editors | L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Gray, G.F. Pinder |
| Publisher | A.A.Balkema |
| Pages | 755-762 |
| Number of pages | 8 |
| ISBN (Print) | 9058091252, 978-9-05-809125-3 |
| Publication status | Published - 1 Jan 2000 |
| Externally published | Yes |
| Event | Computational Methods in Water Resources - Calgary, Canada Duration: 25 Jun 2000 → 29 Jun 2000 |
Conference
| Conference | Computational Methods in Water Resources |
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| Country/Territory | Canada |
| City | Calgary |
| Period | 25/06/00 → 29/06/00 |