Publication de 12 numéros par an
ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508
Indexed in
Migration versus Diffusion through Porous Media: Time-Dependent Scale Analysis
RÉSUMÉ
This paper presents a fundamental study of enhanced ionic transport in the case when an electrical field is applied through a saturated porous medium. The study focuses on the very first moments when the potential difference is applied. Scale analysis is used in order to highlight the existence of two different regimes: initially, pure diffusion prevails in spite of the electrical field that will overtake diffusion-driven transport after a transition time. It is shown that the reason for this change in mechanisms is the search for the maximization of the ionic transfer. In the numerical part, the impact of already contaminated porous medium on the amount of ionic species transferred is studied, together with the effect of the concentration and concentration gradients levels. Finally, an optimization method is proposed in order to maximize the transport of species by applying an electrical field increasing in time.
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Lorente Sylvie, Voinitchi Dorinel, Bégué-Escaffit Pascale, Bourbon Xavier, The single-valued diffusion coefficient for ionic diffusion through porous media, Journal of Applied Physics, 101, 2, 2007. Crossref
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Lorente S., Bejan A., Constructal Design of Vascular Porous Materials and Electrokinetic Mass Transfer, Transport in Porous Media, 77, 2, 2009. Crossref
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Auger Jérôme, Yssorche-Cubaynes Marie-Pierre, Lorente Sylvie, Cussigh François, Demilecamps Louis, Ionic access through porous media with distributed electrodes, Journal of Applied Physics, 104, 8, 2008. Crossref
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Lorente Sylvie, Constructal view of electrokinetic transfer through porous media, Journal of Physics D: Applied Physics, 40, 9, 2007. Crossref
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Voinitchi D., Julien S., Lorente S., The relation between electrokinetics and chloride transport through cement-based materials, Cement and Concrete Composites, 30, 3, 2008. Crossref
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Lorente Sylvie, Yssorche-Cubaynes Marie-Pierre, Auger Jérome, Sulfate transfer through concrete: Migration and diffusion results, Cement and Concrete Composites, 33, 7, 2011. Crossref
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Mercado Hugo, Lorente Sylvie, Bourbon Xavier, Chloride diffusion coefficient: A comparison between impedance spectroscopy and electrokinetic tests, Cement and Concrete Composites, 34, 1, 2012. Crossref
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Nguyen T.S., Lorente S., Carcasses M., Effect of the environment temperature on the chloride diffusion through CEM-I and CEM-V mortars: An experimental study, Construction and Building Materials, 23, 2, 2009. Crossref
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Wattez Thomas, Duhart-Barone Anne, Lorente Sylvie, Modeling of Nuclear Species Diffusion Through Cement-Based Materials, Transport in Porous Media, 98, 3, 2013. Crossref
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Mercado-Mendoza Hugo, Lorente Sylvie, Bourbon Xavier, Ionic aqueous diffusion through unsaturated cementitious materials – A comparative study, Construction and Building Materials, 51, 2014. Crossref
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Quo VadisConstructal Theory?, in Design with Constructal Theory, 2008. Crossref
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Configurations for Electrokinetic Mass Transfer, in Design with Constructal Theory, 2008. Crossref
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Mercado-Mendoza Hugo, Lorente Sylvie, Impact of the pore solution on the aqueous diffusion through porous materials, Open Engineering, 5, 1, 2015. Crossref
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Perez Nestor, Mass Transport by Diffusion and Migration, in Electrochemistry and Corrosion Science, 2016. Crossref
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Irreversible Thermodynamics, in Advanced Engineering Thermodynamics, 2016. Crossref
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Seng Billy, Lorente Sylvie, Magniont Camille, Scale analysis of heat and moisture transfer through bio-based materials — Application to hemp concrete, Energy and Buildings, 155, 2017. Crossref
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Nield Donald A., Bejan Adrian, Mass Transfer in a Porous Medium: Multicomponent and Multiphase Flows, in Convection in Porous Media, 2017. Crossref
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Miguel António F., Constructal pattern formation in stony corals, bacterial colonies and plant roots under different hydrodynamics conditions, Journal of Theoretical Biology, 242, 4, 2006. Crossref
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Nield Donald A., Bejan Adrian, Mass Transfer in a Porous Medium: Multicomponent and Multiphase Flows, in Convection in Porous Media, 2013. Crossref
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Lorente Sylvie, Constructal Law Applications to Efficient Design: Electrokinetics Systems and Enclosures for Heat Transfer, Journal of Heat Transfer, 137, 6, 2015. Crossref