A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media

Different approaches have been proposed to predict streaming potentials in porous media. One approach is based on the excess charge which is effectively dragged in the medium by the water flow. Following the recent theoretical framework of Jougnot et al. (2012), we developed a physically-based analy...

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Detalles Bibliográficos
Autores principales: Guarracino, Luis, Jougnot, Damien
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
Saturated porous media
Excess charge
Permeability
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/147273
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-147273
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Saturated porous media
Excess charge
Permeability
spellingShingle Física
Saturated porous media
Excess charge
Permeability
Guarracino, Luis
Jougnot, Damien
A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
topic_facet Física
Saturated porous media
Excess charge
Permeability
description Different approaches have been proposed to predict streaming potentials in porous media. One approach is based on the excess charge which is effectively dragged in the medium by the water flow. Following the recent theoretical framework of Jougnot et al. (2012), we developed a physically-based analytical model to predict the effective excess charge in saturated porous media. The proposed model allows the determination of the effective excess charge as a function of pore water salinity, fractal dimension and hydraulic parameters like porosity and permeability. This new model has been successfully tested against data from the literature for different porous media. One of the main finding of this study is that it provides a mechanistic explanation to the empirical dependence between the effective excess charge and the permeability that has been found by various researchers. This model is also able to reproduce the evolution of this parameter with respect to the electrolyte concentration.
format Objeto de conferencia
Objeto de conferencia
author Guarracino, Luis
Jougnot, Damien
author_facet Guarracino, Luis
Jougnot, Damien
author_sort Guarracino, Luis
title A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
title_short A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
title_full A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
title_fullStr A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
title_full_unstemmed A physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
title_sort physically-based analytical model to describe effective excess charge for streaming potential generation in saturated porous media
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/147273
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