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Electroosmotic coupling in porous media, a new model based on a fractal upscaling procedure

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doi: 10.1007/s11242-020-01444-7
Authors:Luong Duy Thanh; Jougnot, Damien; Phan Van Do; Mendieta, Aida; Nguyen Xuan Ca; Vu Xuan Hoa; Pham Minh Tan; Nguyen Thi Hien
Author Affiliations:Primary:
Thuyloi University, Hanoi, Vietnam
Sorbonne Université, France
Thai Nguyen University of Sciences, Vietnam
Thai Nguyen University of Technology, Vietnam
Ton Duc Thang University, Vietnam
Volume Title:Transport in Porous Media
Source:Transport in Porous Media, 134(1), p.249-274. Publisher: Springer, Dordrecht, Netherlands. ISSN: 0169-3913
Publication Date:2020
Note:In English. 85 refs.; illus., incl. 3 tables
Summary:Electrokinetic and electroosmotic couplings can play important roles in water and ions transport in charged porous media. Electroosmosis is the phenomena explaining the water movement in a porous medium subjected to an electrical field. In this work, a new model is obtained through a new up-scaling procedure, considering the porous medium as a bundle of tortuous capillaries of fractal nature. From the model, the expressions for the electroosmosis pressure coefficient, the relative electroosmosis pressure coefficient, the maximum back pressure, the maximum flow rate, the flow rate-applied back pressure relation and the product of the permeability and formation factor of porous media are also obtained. The sensitivity of the relative electroosmosis pressure coefficient is then analyzed and explained. The model predictions are then successfully compared with published datasets. Additionally, we deduce an expression for the relative streaming potential coefficient and then compare it with a previously published model and experimental data from a dolomite rock sample. We find a good agreement between those models and experimental data, opening up new perspectives to model electroosmotic phenomena in porous media saturated with various fluids.
Subjects:Capillarity; Carbonate rocks; Coupling; Electro-osmosis; Electrokinetics; Fluid flow; Fractals; Ions; Permeability; Porous materials; Pressure; Saturation; Scale models; Sedimentary rocks; Tortuosity; Transport; Water; Zeta potential
Record ID:885334-10
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany
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