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- W2018551083 abstract "Abstract We discuss several examples of applications of soft matter and statistical physics to various problems related to porous and fractured media. The structure of porous media often displays multiple scale features which can be analysed by neutron diffraction or electron microscopy and can be approached by fractal models. Such characteristics are also observed on the surface of natural fractures.The relation between various transport parameters such as permeability or conductivity introduce characteristic microscopic length scales which can sometimes be independently determined. In some cases, if the porous medium get clogged or if the number of flow channels or fractures is low enough so that threshold effects appear which can be analysed in terms of percolation models. Disorder physics approaches are particularly useful to analyse non miscible diphasic flows in some cases in which multiscale heterogeneities of the fluid mixture composition appear. This is for instance the case for very slow non wetting invasions and of the fast injection of a low viscosity fluid : these processes can be described respectively by the “invasion percolation” and the “diffusion limited aggregation” models. Finally tracer dispersion provides an application of random walk models to disordered systems : examples of the response of this measurement in partly saturated and double porosity media are presented." @default.
- W2018551083 created "2016-06-24" @default.
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- W2018551083 date "1994-04-01" @default.
- W2018551083 modified "2023-09-25" @default.
- W2018551083 title "Porous media: A model system for the physics of disorder" @default.
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- W2018551083 doi "https://doi.org/10.1016/0001-8686(94)80012-x" @default.
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