Concept

Porous medium

Publications associées (248)

Characterization of capillary forces during liquid metal infiltration

This thesis addresses the link between capillarity parameters, i.e. surface tension and contact angle, and the infiltration of porous preforms with molten metal by pressure infiltration The method used is to conduct pressure infiltration experiments of sel ...

EPFL2007

A magnetic heat pump with porous magneto caloric material

Didier Albert Simon Vuarnoz, Marc Diebold

At present magnetic refrigeration shows a realistic potential to penetrate into some niche markets in the field of cold and hot "production". It is well known that a refrigerator for cooling and a heat pump for heating are machines based on the same princi ...

Wiley-Blackwell2007

Comportement au jeune âge et différé d'un BFUP écrouissant sous les effets thermomécaniques

Aicha Kamen

This thesis is dedicated to study the early age behavior and time dependant as well as the thermo-mechanical response under restraint of a hardening Ultra High Performance Fiber Reinforced Concrete (UHPFRC). The knowledge of the UHPFRC behavior is indispen ...

EPFL2007

3D experimental investigation of the microstructure of cement pastes using synchrotron X-ray microtomography (mu CT)

Giorgio Margaritondo, Karen Scrivener, Amela Groso, Emmanuel Gallucci, Marco Stampanoni

Cement pastes aged from 1 to 60 days were studied using synchrotron microtomography on the MS-X04SA beam line at the Swiss Light Source. This allowed three dimensional images to be obtained with a resolution approaching that of backscattered electron image ...

Elsevier2007

Linking drainage front morphology with gaseous diffusion in unsaturated porous media: A lattice Boltzmann study

Dani Or

The effect of drainage front morphology on gaseous diffusion through partially saturated porous media is analyzed using the lattice Boltzmann method (LBM). Flow regimes for immiscible displacement in porous media have been characterized as stable displacem ...

2006

Towards a Micro-Macro Model of Hot Tearing

Michel Rappaz, Jean-Marie Drezet, Vincent Mathier, Stéphane Vernède

Modelling of hot tearing must encompass several aspects: solidification, percolation of grains, stress/strain development, liquid feeding. The present contribution reviews recent progress made in this domain, both at the macro- and microscopic levels. At t ...

Trans Tech Publications2006

The electrical conductivity of microcellular metals

Andreas Mortensen, Ludger Weber

The electrical conductivity of metallic foams varies strongly with porosity. Data are presented for replicated open-pore microcellular metal over a wide range of relative density. These data, together with data from the literature for different foam struct ...

2006

Drug loading of porous coating

Heinrich Hofmann, Laurent-Dominique Piveteau

Porous coating for the controlled release of drugs, said coating comprising a porous structure with pores adapted to act as reservoirs or as passages for a drug, in such a way that said drug can move from the external environment to/from or through said po ...

2006

Formation and Drying of Colloidal Crystals Using Nanosized Silica Particles

Heinrich Hofmann, Paul Bowen, Frédéric Juillerat

Much interest has been generated in the fabrication of colloidal crystals from suspensions because of the promise of photonic band gap applications. However, since the case of small, nonsedimenting colloidal particles indeed remains rather rarely treated, ...

2006

Geometrical factors and interfacial processes affecting complex dielectric permittivity of partially saturated porous media

Yixing Chen, Dani Or

Methods for remote and ground-based sensing of soil water content often rely on determination of bulk dielectric permittivity which may be affected by factors other than water content, such as interfacial polarization (Maxwell-Wagner effect), phase configu ...

2006

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