Appraisal Of Electro‐Osmotic Oedometer Tests

Banerjee, Sunirmal; Vitayasupakorn, Vichai

doi:10.1061/(asce)0733-9410(1984)110:8(1007)

Cited by 14 publications

(3 citation statements)

References 14 publications

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“…The parallel pattern was examined in mathematical expressions for pore pressures (Vey 1949;Banerjee and Vitayasupakorn 1980), settlements (Kondner and Boyer 1957), and degree of consolidation (Iwata and Jami 2010). Regarding the orthogonal pattern, Nicholls and Herbst (1967) predicted pore pressures in the circumstance of radial flow (a hexagonal grid pattern).…”

Section: Previous Studiesmentioning

confidence: 99%

Modeling Electroosmosis and Surcharge Preloading Consolidation. I: Model Formulation

Deng

Zhou

2016

J. Geotech. Geoenviron. Eng.

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A numerical model, EC2, is developed to simulate the consolidation of a soil layer subjected to combined electroosmosis and surcharge preloading. EC2 includes the capabilities of a previous model, EC1, in accounting for large-strain-induced nonlinear changes of the physical and geoelectrical properties occurring to the layer, with the additions of two-dimensional consolidation, coupled loading and electric fields, time-dependent loading and current density, and an external hydraulic gradient. A highlight of the EC2 model is the superposition of multiple streams between small elements, which improves the prediction accuracy of the rate of flow and the degree of consolidation. The consolidation algorithm of EC2 is one-dimensional and conducted using finite difference and piecewiselinear methods. This paper presents the theoretical and numerical development of the EC2 model. A companion paper presents the validation of the model and the results of simulations that illustrate the optimization of the consolidating processes for some interesting design scenarios.

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Section: Previous Studiesmentioning

confidence: 99%

Modeling Electroosmosis and Surcharge Preloading Consolidation. I: Model Formulation

Deng

Zhou

2016

J. Geotech. Geoenviron. Eng.

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“…Introducing a variable î (Esrig, 1968;Mitchell, 1976;Banerjee & Mitchell, 1980;Banerjee & Vitayasupakorn, 1984):…”

Section: Two-dimensional Consolidation Theory Of Electro-osmosismentioning

confidence: 99%

The two-dimensional consolidation theory of electro-osmosis

Wang

2003

Géotechnique

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“…Electroosmosis is utilized widely in microfluidics (Karniadakis et al 2005) and at the pore scale (Coelho et al 1996, Gupta et al 2008 to move fluids through small pores. At the laboratory and field scale it has been used to consolidate soft clays (Banerjee and Mitchell 1980, Banerjee and Vitayasupakorn 1984, Lo et al 1991, Alshawabkeh et al 2004 or mobilize contaminants (Bruell et al 1992, Acar et al 1993, Shapiro and Probstein 1993, Acar and Alshawabkeh 1996, Virkutyte et al 2002, Bertolini et al 2009. Seismoelectric applications consider the electrokinetic response of a porous formation to seismic waves (Pride 1994, Haines and Pride 2006, Revil et al 2015, Peng et al 2019.…”

Section: Introductionmentioning

confidence: 99%

Uncoupling electrokinetic flow solutions

Kuhlman,

Malama

2020

Preprint

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The continuum-scale electrokinetic porous-media flow and excess charge redistribution equations are uncoupled using eigenvalue decomposition. The uncoupling results in a pair of independent diffusion equations for "intermediate" potentials subject to modified material properties and boundary conditions. The fluid pressure and electrostatic potential are then found by recombining the solutions to the two intermediate uncoupled problems in a matrix-vector multiply. Expressions for the material properties or source terms in the intermediate uncoupled problem may require extended precision or careful re-writing to avoid numerical cancellation, but the solutions themselves can be computed in typical double precision. The approach works with analytical or gridded numerical solutions and is illustrated through two examples. The solution for flow to a pumping well is manipulated to predict streaming potential and electroosmosis, and a periodic one-dimensional analytical solution is derived and used to predict electroosmosis and streaming potential in a laboratory flow cell subjected to low frequency alternating current and pressure excitation. The examples illustrate the utility of the eigenvalue decoupling approach, repurposing existing analytical solutions and leveraging simpler-to-derive solutions or numerical models for coupled physics.

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Appraisal Of Electro‐Osmotic Oedometer Tests

Cited by 14 publications

References 14 publications

Modeling Electroosmosis and Surcharge Preloading Consolidation. I: Model Formulation

Modeling Electroosmosis and Surcharge Preloading Consolidation. I: Model Formulation

The two-dimensional consolidation theory of electro-osmosis

Uncoupling electrokinetic flow solutions

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