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author = "De Dreuzy, Jean-Raynald"
1
Found 8 documents, displaying page 1 of 1
Analyse des propriétés hydrauliques
des réseaux de fractures
Discussion des modèles d'écoulement compatibles
avec les principales propriétés géométriques
Author(s) :
De Dreuzy, Jean-Raynald
Description :
L'intérêt porté aux milieux fracturés s'est développé dans le cadre de l'exploitation des nappes phréatiques et pétrolifères et la recherche de sites de stockage souterrains pour les déchets nucléaires de longue durée de vie. Les fractures peuvent en effet offrir des voies préférentielles d'écouleme...
Repository :
HAL - Hyper Article on Line
Language(s) :
French
Modélisation des écoulements et du transport dans les milieux fortement hétérogènes et fracturés
Author(s) :
De Dreuzy, Jean-Raynald
Description :
Modélisation des écoulements et du transport dans les milieux fortement hétérogènes et fracturés
Repository :
HAL - Hyper Article on Line
Language(s) :
French
Asymptotic dispersion in 2D heterogeneous porous media determined by parallel numerical simulations
Description :
We determine the asymptotic dispersion coefficients in 2D exponentially correlated lognormally distributed permeability fields by using parallel computing. Fluid flow is computed by solving the flow equation discretized on a regular grid and transport triggered by advection and diffusion is simulate...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Statistical characteristics of flow as indicators of channeling in heterogeneous porous and fractured media
Description :
We introduce two new channeling indicators Dic and Dcc based on the Lagrangian distribution of flow rates. On the basis of the participation ratio, these indicators characterize the extremes of both the flow-tube width distribution and the flow rate variation along flow lines. The participation rati...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Connectivity-consistent mapping method for 2-D discrete fracture networks
Description :
We present a new flow computation method in 2-D discrete fracture networks (DFN) intermediary between the classical DFN flow simulation method and the projection onto continuous grids. The method divides the simulation complexity by solving for flows successively at a local mesh scale and at the glo...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Semi-analytical solutions for solute transport and exchange in fractured porous media
Description :
Fracture-matrix interactions can significantly affect solute transport in fractured porous media and rocks, even when fractures are major (or sole) conduits of flow. We develop a semi-analytical solution for transport of conservative solutes in a single fracture. Our solution accounts for two-dimens...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Percolation parameter and percolation-threshold estimates for 3D random ellipses with widely-scattered distributions of eccentricity and size
Description :
In fractured materials of very low matrix permeability, fracture connectivity is the first-order determinant of the occurrence of flow. For systems having a narrow distribution of object sizes (short-range percolation), a first-order percolation criterion is given by the total excluded volume that i...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Simulation and analysis of solute transport in 2D fracture/pipe networks: The SOLFRAC program
Author(s) :
Bodin, Jacques
,
Porel, Gilles
,
Delay, Fred
,
Ubertosi, Fabrice
,
Bernard, Stéphane
,
De Dreuzy, Jean-Raynald
Description :
The Time Domain Random Walk (TDRW) method has been recently developed by Delay and Bodin (2001) and Bodin et al. (2003c) for simulating solute transport in discrete fracture networks. It is assumed that the fracture network can reasonably be represented by a network of interconnected one-dimensional...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
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Found 8 documents, displaying page 1 of 1