Concept

Porous medium

Related publications (248)

Robin-Robin Domain Decomposition Methods for the Stokes-Darcy Coupling

In this paper we consider a coupled system made of the Stokes and Darcy equations, and we propose some iteration-by-subdomain methods based on Robin conditions on the interface. We prove the convergence of these algorithms, and for suitable finite element ...

2007

Analytical approximations for flow in compressible, saturated, one-dimensional porous media

David Andrew Barry

A nonlinear model for single-phase fluid flow in slightly compressible porous media is presented and solved approximately. The model assumes state equations for density, porosity, viscosity and permeability that are exponential functions of the fluid (eith ...

2007

Simulation of Clogging Phenomena in Natural Porous Media

David Andrew Barry, Alessandro Brovelli, Flavio Malaguerra

The objective of this study is to investigate the modelling of porosity and hydraulic conductivity changes in saturated porous media induced by the biological growth in pore space. Three different relationships between porosity changes and hydraulic conduc ...

2007

Two-phase modelling of hot tearing in aluminium alloys using a semi-coupled approach

Michel Rappaz, Jean-Marie Drezet, Vincent Mathier

Hot tearing, one of the most severe defects observed in castings, is due to both tensile stresses and lack of interdendritic liquid feeding in the mushy zone. In order to predict this phenomenon, the two-phase averaged conservation equations for mass and m ...

2007

Theroretical and experimental multi-scale study of an artificial bone construct

Luc Blecha

Synthetic bone substitutes are potentially the future gold standard in orthopaedic and traumatologic surgery. The availability of these bone substitutes with different biomechanical properties may well replace autografts in the future as they overcome comp ...

EPFL2007

Traveling liquid bridges in unsaturated fractured porous media

Dani Or

Interplay between capillary, gravity and viscous forces in unsaturated fractures gives rise to a range of complex flow phenomena. Evidence of highly intermittent fluxes, preferential and sustainable flow pathways lead to potentially significant flow focusi ...

Kluwer Academic Publishers, Springer2007

Unified stress framework for modelling unsaturated subsoil behaviour

Lyesse Laloui, Mathieu Nuth

Traffic loads combined with moisture variations are the most harmful for road structures. Even if the pavement is assumed to have an elastic behaviour, the partially saturated subsoil can present irreversible strains that endanger the integrity of the road ...

2007

Numerical modelling of the hydrogeological and geomechanical behaviour of a large slope movement: The Triesenberg landslide (Liechtenstein)

Lyesse Laloui, Laurent Tacher, Bertrand François, Véronique Triguero

Using advanced hydrogeological and geomechanical finite element modelling, it has been possible to model the mechanical behaviour of a large slope movement, the Triesenberg landslide. This slope is located along the Rhine valley in the Principality of Liec ...

2007

A composite biofoam, from research to in vivo validation

Dominique Pioletti, Pierre-Etienne Bourban

Bone tissue engineering aims at developing scaffolds, or porous structures, as supports for cell migration, proliferation and differentiation, in order to favor bone healing. L-poly lactic acid (PLA) foams, which were reinforced or not with β-tricalcium ph ...

2007

Measurements and Modeling of variable gravity effects on water distribution and flow in unsaturated porous media

Dani Or

Liquid behavior under reduced gravity conditions is of considerable interest for various components of life-support systems required for manned space missions. High costs and limited opportunities for spaceflight experiments hinder advances in reliable des ...

2007

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