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Journal articles on the topic 'Electrokinetic model'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Thanh, Luong Duy, Damien Jougnot, Phan Van Do, Dang Thi Minh Hue, Tran Thi Chung Thuy, and Vu Phi Tuyen. "Predicting Electrokinetic Coupling and Electrical Conductivity in Fractured Media Using a Fractal Distribution of Tortuous Capillary Fractures." Applied Sciences 11, no. 11 (2021): 5121. http://dx.doi.org/10.3390/app11115121.

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Electrokinetics methods have attracted increasing interest to characterize hydrogeological processes in geological media, especially in complex hydrosystems such as fractured formations. In this work, we conceptualize fractured media as a bunch of parallel capillary fractures following the fractal size distribution. This conceptualization permits to obtain analytical models for both the electrical conductivity and the electrokinetic coupling in water saturated fractured media. We explore two different approaches to express the electrokinetic coupling. First, we express the streaming potential

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2

Moeller, Marcus J., and Christoph Kuppe. "Point: Proposing the Electrokinetic Model." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 35, no. 1 (2015): 5–8. http://dx.doi.org/10.3747/pdi.2014.00189.

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It is still not fully resolved how the glomerular filter works and why it never clogs. Several models have been proposed. In this review, we will compare the most widely used “pore model” to the more recent and refined “electrokinetic model” of glomerular filtration. The pore model assumes the existence of highly ordered regular pores, but it cannot provide a mechanistic explanation for several of the inherent characteristics of the glomerular filter. The electrokinetic model assumes that streaming potentials generate an electrical field along the filter surface which repels the negatively cha

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3

Wang, Gaofeng, Bowen Ling, Xiaoliang Liang, et al. "Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining." Minerals 14, no. 4 (2024): 360. http://dx.doi.org/10.3390/min14040360.

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Electrokinetic mining (EKM) is a novel method for rare earth element (REE) mining that can achieve green and efficient recovery of REEs. However, as yet, there is no accurate model for describing the electrokinetic transport of REEs in weathering crusts, and this hinders the wider application of EKM. The conventional model fails to capture the microscale transport physics occurring in the nanochannels that exist ubiquitously in weathering crusts. Consequently, the existing models cannot distinguish the mobilities of different REEs. Here, we report a new model for a more faithful description of

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4

Alshawabkeh, Akram N., and Yalçin B. Acar. "Electrokinetic Remediation. II: Theoretical Model." Journal of Geotechnical Engineering 122, no. 3 (1996): 186–96. http://dx.doi.org/10.1061/(asce)0733-9410(1996)122:3(186).

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5

Yeung, Albert T., and Subbaraju Datla. "Fundamental formulation of electrokinetic extraction of contaminants from soil." Canadian Geotechnical Journal 32, no. 4 (1995): 569–83. http://dx.doi.org/10.1139/t95-060.

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Electro-osmosis and ionic migration are the basic cleanup mechanisms in the electrokinetic extraction of contaminants from fine-grained soils. These are coupled flows as the flows of fluid and contaminants are driven by an externally applied electrical gradient. Moreover, other electrochemical reactions will occur simultaneously during the process. The most pronounced effect is the generation of pH gradient in the soil. The change of pH in the pore fluid can have a significant impact on the degree of sorption and desorption of chemicals on soil particle surfaces, complexes formation and precip

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6

Chaudhary, Sandhya, Nilesh Nimje, Nishchhal Yadav, and S. Ghosh. "Drift Modified Longitudinal Electrokinetic Mode in Colloids Laden Semiconductor Quantum Plasmas." Physics Research International 2014 (September 15, 2014): 1–5. http://dx.doi.org/10.1155/2014/634763.

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Dispersion and absorption characteristics of electrokinetic wave in unmagnetised extrinsic semiconductor with streaming carriers are analytically investigated. By using quantum hydrodynamic model, a linear dispersion relation is derived for longitudinal electrokinetic wave in colloids laden semiconductor plasma under slow electrokinetic mode regime. Results indicate that quantum effect through Bohm potential significantly modifies the dispersion and absorption characteristics of electrokinetic wave spectrum. The outcome is hoped to add substantially to the present knowledge of wave spectrum of

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7

González-Fernández, Carlos F., José Horno, and Fernando González-Caballero. "A network thermodynamic model for transient effects in electrokinetic energy conversion." Collection of Czechoslovak Chemical Communications 54, no. 9 (1989): 2330–34. http://dx.doi.org/10.1135/cccc19892330.

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A network model is proposed allowing the transient effects in electrokinetic phenomena to be studied in terms of the network thermodynamics concept. Relaxation times for the build-up of electroosmotic pressure and streaming potential, time required for the electrokinetic energy conversion to reach its maximum efficiency and the optimum outforce for the energy conversion are readily obtained by this method.

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8

Sharfarets B. P., Dmitriev S. P., Kurochkin V. E., and Legusha F. F. "Acoustoelectric transducer based on electrokinetic phenomenon flow potential." Technical Physics Letters 48, no. 15 (2022): 61. http://dx.doi.org/10.21883/tpl.2022.15.54269.18970.

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A mathematical model of an acoustoelectric transducer based on the use of the electrokinetic phenomenon of the flow potential is proposed. It is shown theoretically that the flow potential increases in proportion to the strength of the constant electric pumping field, which is confirmed experimentally. The described converter has variable sensitivity. Rather large values of the sensitivity of an electrokinetic microphone have been obtained experimentally. The results of the work can be used in the design of acoustoelectric transducers. Keywords: Acoustoelectric conversion, Electrokinetic pheno

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9

Oddy, Michael H., and Juan G. Santiago. "Multiple-species model for electrokinetic instability." Physics of Fluids 17, no. 6 (2005): 064108. http://dx.doi.org/10.1063/1.1931727.

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10

LIN, HAO, BRIAN D. STOREY, and JUAN G. SANTIAGO. "A depth-averaged electrokinetic flow model for shallow microchannels." Journal of Fluid Mechanics 608 (July 11, 2008): 43–70. http://dx.doi.org/10.1017/s0022112008001869.

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Electrokinetic flows with heterogeneous conductivity configuration occur widely in microfluidic applications such as sample stacking and multidimensional assays. Electromechanical coupling in these flows may lead to complex flow phenomena, such as sample dispersion due to electro-osmotic velocity mismatch, and electrokinetic instability (EKI). In this work we develop a generalized electrokinetic model suitable for the study of microchannel flows with conductivity gradients and shallow-channel geometry. An asymptotic analysis is performed with the channel depth-to-width ratio as a smallness par

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11

Mohamedelhassan, Eltayeb. "Laboratory Model Test on Improving the Properties of Soft Clay by Electrokinetics." ISRN Civil Engineering 2011 (April 28, 2011): 1–14. http://dx.doi.org/10.5402/2011/560834.

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This experimental study was carried out in two test series to investigate the feasibility of decreasing the water content and increasing the shear strength and axial load capacity of laboratory-prepared soft clay by electrokinetic treatment. The focus of the investigations is the influence of pore fluid chemistry (fresh or highly saline water) on the gained improvement and on the energy consumption. The results showed that electrokinetics was effective in improving the properties of the soft clay with fresh and saline water. The degree of improvement, however, was superior in tests with freshw

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12

Veliyev, F. H., and A. R. Aslanova. "Electrokinetic regulation of the process of oil displacement by water in microcracks." Azerbaijan Oil Industry, no. 12 (December 15, 2023): 18–21. http://dx.doi.org/10.37474/0365-8554/2023-12-18-21.

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The displacement of Newtonian oil by water in a model of a microchannel of rectangular cross-section is experimentally investigated. Using a microchannel model, it was found that the efficiency of oil displacement by water is significantly influenced by the magnitude of the electrokinetic potential of the system. To regulate the electrokinetic potential, an antistatic additive was used, the optimal concentration of which was established experimentally. The efficiency of immiscible oil displacement was determined at different openness h of microchannels in the absence and presence of additives

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13

Fedosin, Sergey G. "Generation of Magnetic Fields in Cosmic Objects: Electrokinetic Model." Advances in Physics Theories and Applications 44 (July 3, 2015): 123–38. https://doi.org/10.5281/zenodo.888921.

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Based on the assumption of separation of the charges in matter of cosmic bodies the possibility of obtaining the magnetic moment by these bodies is proved. The magnitude of the magnetic field appears proportional to the angular velocity of the body’s rotation and to the radius of convective layer. The periods of change of polarity of magnetic field of the Earth and the Sun are calculated by means of the size the convective layer and the convection speed. The solar activity appears the consequence of periodic transformation of the thermal energy into the electromagnetic form of energy.

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14

Fuad, Veliyev, and Aslanova Aida. "Non-Newtonian Characteristics of Water Flow in Microchannels." Indian Journal of Science and Technology 16, no. 47 (2023): 4605–11. https://doi.org/10.17485/IJST/v16i47.2691.

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Abstract <strong>Objectives:</strong> The rheophysical aspects of non-Newtonian behavior of water flow in thin channels are experimentally examined. The main objective of the research work is to establish the role of electrokinetic potential on the regulation of the rheophysical properties of fluid flow and by decreasing the electrokinetic potential, reducing hydraulic resistance of the system and improving the fluid flow. <strong>Method:</strong> Microchannel model with different openness value was used. To regulate the electrokinetic potential, antistatic additives were used,

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15

Rau, Tobias, Florian Weik, and Christian Holm. "A dsDNA model optimized for electrokinetic applications." Soft Matter 13, no. 21 (2017): 3918–26. http://dx.doi.org/10.1039/c7sm00270j.

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16

Jen, David H., and Charles R. Steele. "Electrokinetic model of cochlear hair cell motility." Journal of the Acoustical Society of America 82, no. 5 (1987): 1667–78. http://dx.doi.org/10.1121/1.395158.

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17

Micic, S., J. Q. Shang, and K. Y. Lo. "Improvement of the load-carrying capacity of offshore skirted foundations by electrokinetics." Canadian Geotechnical Journal 40, no. 5 (2003): 949–63. http://dx.doi.org/10.1139/t03-045.

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Originating from the problem facing offshore foundation engineering, the present study is focused on using electrokinetics to enhance the load-carrying capacity of skirted foundations embedded in soft marine deposits. An experimental study was carried out in a model tank having dimensions of 150 cm × 75 cm × 70 cm. The experiments were conducted on the Welland River sediment mixed with a high salinity solution that simulates the composition of seawater. A steel cylinder of 320 mm in diameter was embedded in the sediment to represent a skirted foundation. Electrodes were installed around the st

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18

Tamagnini, Claudio, Cristina Jommi, and Fabio Cattaneo. "A model for coupled electro-hydro-mechanical processes in fine grained soils accounting for gas generation and transport." Anais da Academia Brasileira de Ciências 82, no. 1 (2010): 169–93. http://dx.doi.org/10.1590/s0001-37652010000100014.

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A theoretical and numerical model is developed for the quantitative analysis of coupled processes taking place in active waste containment systems, such as electrokinetic barriers or fences, in which alow intensity DC current is circulated across the clay barrier to move polar and non-polar contaminants. A novel feature of the proposed approach is the allowance for the presence of air in the pore space. Under unsaturated conditions, all transport coefficients involved in the electrokinetic process are strongly dependent on the degree of saturation of pore liquid. In order to assess the predict

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19

Zhao, Yongpeng, Xiangyang Sun, and Zaiping Nie. "Study of the Seismoelectric Effect in Saturated Porous Media Using a Bundle of Capillary Tubes Model." Electronics 12, no. 2 (2023): 379. http://dx.doi.org/10.3390/electronics12020379.

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The seismoelectric effect is the fundamental basis for seismoelectric logging. Most of the existing theories for the seismoelectric effect are based on the Pride theory, which adopts the assumption of a thin electric double layer and uses the volume-averaging method to derive the seismoelectric coupling equations; hence, the obtained electrokinetic coupling coefficient is not applicable to large-Debye-length cases. In addition, the Pride theory neglects the change in seepage velocity with the radial position of the pore when calculating the streaming current, which leads to an inaccurate refle

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20

Mohamedelhassan, Eltayeb, Kevin Curtain, Matt Fenos, Kevin Girard, Anthony Provenzano, and Wesley Tabaczuk. "Electrokinetic Treatment for Model Caissons with Increasing Dimensions." Advances in Civil Engineering 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/153123.

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Electrokinetic treatment has been known in geotechnical engineering for over six decades, yet, the technique is rarely used. This stems from the absence of design guidelines and specifications for electrokinetic treatment systems. An important issue that need to be investigated and understood in order to devise guidelines from experimental results is the effect of the foundation element size on the outcome of the treatment. Also important is determining the optimum distance between the electrodes and estimating the energy consumption prior to treatment. This experimental study is a preliminary

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21

Ahualli, Silvia, Sara Bermúdez, Félix Carrique, María L. Jiménez, and Ángel V. Delgado. "AC Electrokinetics of Salt-Free Multilayered Polymer-Grafted Particles." Polymers 12, no. 9 (2020): 2097. http://dx.doi.org/10.3390/polym12092097.

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Interest in the electrical properties of the interface between soft (or polymer-grafted) nanoparticles and solutions is considerable. Of particular significance is the case of polyelectrolyte-coated particles, mainly taking into account that the layer-by-layer procedure allows the control of the thickness and permeability of the layer, and the overall charge of the coated particle. Like in simpler systems, electrokinetic determinations in AC fields (including dielectric dispersion in the 1 kHz–1 MHz frequency range and dynamic electrophoresis by electroacoustic methods in the 1–18 MHz range) p

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22

Kuljanin, Tatjana, Ljubinko Levic, Nevena Misljenovic, and Gordana Koprivica. "Electric double layer and electrokinetic potential of pectic macromolecules in sugar beet." Acta Periodica Technologica, no. 39 (2008): 21–28. http://dx.doi.org/10.2298/apt0839021k.

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Electrokinetic potential is an important property of colloidal particles and, regarding the fact that it is a well defined and easily measurable property, it is considered to be a permanent characteristic of a particular colloidal system. In fact, it is a measure of electrokinetic charge that surrounds the colloidal particle in a solution and is in direct proportion with the mobility of particles in an electric field. Gouy-Chapman-Stern-Graham's model of electric double layer was adopted and it was proven experimentally that the addition of Cu++ ions to sugar beet pectin caused a reduction in

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23

Xiao-hui, Wu, Wang Yan-feng, Chen Jiejing, Cheng Xin, and Xia Jin. "Comparison of Electrochemical Chloride Extraction Models for Reinforced Concrete Structures Based on Multiple Potential Theories." Advances in Materials Science and Engineering 2022 (April 12, 2022): 1–19. http://dx.doi.org/10.1155/2022/9991434.

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For chloride-contaminated RC structures, steel corrosion is one of the most common reasons causing the deterioration of reinforced concrete (RC) structures. Electrochemical chloride extraction (ECE), which migrates the chloride ions out of the RC structure, is preferred as it is a nondestructive repairing method. In this context, electrokinetic models are often used to investigate ECE processes. Currently, electrokinetic models based on different potential theories, such as the constant potential, electroneutrality, and Gauss’ law, may be used to solve the potential distribution. Although many

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24

Wan, Yu Shan, Ju An Zhai, and An Wei Wang. "Response Surface Method Analysis on Electro-Enhanced Technique for Remediation of Cadmium Contaminated Soil." Materials Science Forum 980 (March 2020): 502–11. http://dx.doi.org/10.4028/www.scientific.net/msf.980.502.

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In view of the problems of long remediation time, high energy consumption and low remediation efficiency in electrokinetic remediation of heavy metal contaminated soil, Cd was used to simulate heavy metals in contaminated soil, and response surface method (RSM) was used to optimize the factors influencing electrokinetic remediation. Central Composite (CCD) experimental design method was taken to study the effects of electric field strength, remediation time and water content on removal rate of Cd in soil. Also, polynomial regression mathematical model and optimal reaction conditions were provi

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25

Hill, Reghan J. "Steady electrodiffusion in hydrogel-colloid composites: macroscale properties from microscale electrokinetics." Anais da Academia Brasileira de Ciências 82, no. 1 (2010): 69–86. http://dx.doi.org/10.1590/s0001-37652010000100007.

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A rigorous microscale electrokinetic model for hydrogel-colloid composites is adopted to compute macroscale profiles of electrolyte concentration, electrostatic potential, and hydrostatic pressure across membranes that separate electrolytes with different concentrations. The membranes are uncharged polymeric hydrogels in which charged spherical colloidal particles are immobilized and randomly dispersed with a low solid volume fraction. Bulk membrane characteristics and performance are calculated from a continuum microscale electrokinetic model (Hill 2006b, c). The computations undertaken in th

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26

Schoemaker, F. C., N. Grobbe, M. D. Schakel, S. A. L. de Ridder, E. C. Slob, and D. M. J. Smeulders. "Experimental Validation of the Electrokinetic Theory and Development of Seismoelectric Interferometry by Cross-Correlation." International Journal of Geophysics 2012 (2012): 1–23. http://dx.doi.org/10.1155/2012/514242.

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We experimentally validate a relatively recent electrokinetic formulation of the streaming potential (SP) coefficient as developed by Pride (1994). The start of our investigation focuses on the streaming potential coefficient, which gives rise to the coupling of mechanical and electromagnetic fields. It is found that the theoretical amplitude values of this dynamic SP coefficient are in good agreement with the normalized experimental results over a wide frequency range, assuming no frequency dependence of the bulk conductivity. By adopting the full set of electrokinetic equations, a full-wavef

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27

Shiba, S., S. Hino, Y. Hirata, and T. Seno. "Removal of heavy metal from soil and groundwater by in-situ electrokinetic remediation." Water Science and Technology 42, no. 7-8 (2000): 335–43. http://dx.doi.org/10.2166/wst.2000.0586.

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The operational variables of electrokinetic remediation have not been cleared yet, because this method is relatively new and is an innovative technique in the aquifer remediation. In order to investigate the operational variables of the electrokinetic remediation, a mathematical model has been constructed based on the physico chemical mass transport process of heavy metals in pore water of contaminated aquifer. The transport of the heavy metals is driven not only by the hydraulic flow due to the injection of the purge water but also by the electromigration due to the application of the electri

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28

Chen, X. Y., K. C. Toh, C. Yang, and J. C. Chai. "Numerical Computation of Hydrodynamically and Thermally Developing Liquid Flow in Microchannels With Electrokinetics Effects." Journal of Heat Transfer 126, no. 1 (2004): 70–75. http://dx.doi.org/10.1115/1.1643909.

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Developing fluid flow and heat transfer with temperature dependent properties in microchannels with electrokinetic effects is investigated numerically. The electrokinetic effect on liquid flow in a parallel slit is modeled by the general Nernst-Planck equation describing anion and cation distributions, the Poisson equation determining the electrical potential profile, the continuity equation, and the modified Navier-Stokes equation governing the velocity field. A Finite-Volume Method is utilized to solve the proposed model.

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29

Шарфарец, Б. П., С. П. Дмитриев, В. Е. Курочкин та Ф. Ф. Легуша. "Акустоэлектрический преобразователь на основе электрокинетического явления потенциал течения". Письма в журнал технической физики 47, № 24 (2021): 24. http://dx.doi.org/10.21883/pjtf.2021.24.51794.18970.

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A mathematical model of an acoustoelectric transducer based on the use of the electrokinetic phenomenon of the flow potential is proposed. It is shown theoretically that the flow potential increases in proportion to the strength of the constant electric pumping field, which is confirmed experimentally. The described converter has variable sensitivity. Rather large values of the sensitivity of an electrokinetic microphone have been obtained experimentally. The results of the work can be used in the design of acoustoelectric transducers.

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30

de las Nieves, F. J., E. S. Daniels, and M. S. El-Aasser. "Electrokinetic characterization of highly sulfonated polystyrene model colloids." Colloids and Surfaces 60 (November 1991): 107–26. http://dx.doi.org/10.1016/0166-6622(91)80272-p.

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31

Tripathi, Dharmendra, V. K. Narla, and Yasser Aboelkassem. "Electrokinetic membrane pumping flow model in a microchannel." Physics of Fluids 32, no. 8 (2020): 082004. http://dx.doi.org/10.1063/5.0015451.

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32

López-García, J. J., C. Grosse, and J. Horno. "A New Generalization of the Standard Electrokinetic Model." Journal of Physical Chemistry B 111, no. 30 (2007): 8985–92. http://dx.doi.org/10.1021/jp071569q.

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Yeung, Albert T., Rajendra M. Menon, and Akram N. Alshawabkeh. "Discussion and Closure: Electrokinetic Remediation. II: Theoretical Model." Journal of Geotechnical and Geoenvironmental Engineering 123, no. 11 (1997): 1078–81. http://dx.doi.org/10.1061/(asce)1090-0241(1997)123:11(1078).

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34

Hu, Lianguang, Jed D. Harrison, and Jacob H. Masliyah. "Numerical Model of Electrokinetic Flow for Capillary Electrophoresis." Journal of Colloid and Interface Science 215, no. 2 (1999): 300–312. http://dx.doi.org/10.1006/jcis.1999.6250.

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35

Walsh, W. R., and N. Guzelsu. "Electrokinetic behavior of intact wet bone: Compartmental model." Journal of Orthopaedic Research 9, no. 5 (1991): 683–92. http://dx.doi.org/10.1002/jor.1100090508.

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Ge, Shangqi, Ji-Peng Wang, Lingwei Zheng, Hengyu Wang, and Xinyu Xie. "Analytical model for electrokinetic remediation of contaminated soil." IOP Conference Series: Earth and Environmental Science 1335, no. 1 (2024): 012039. http://dx.doi.org/10.1088/1755-1315/1335/1/012039.

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Abstract Electrokinetic remediation (EKR) is an effective approach to eliminate heavy metal contaminants from soil and pore water. However, only a few studies have been conducted on related analytical theory because of the complexity of transport processes and the lack of effective calculation methods. In this study, a novel analytical model is proposed to investigate the one-dimensional transport of heavy metal ions (HMIs), encompassing electro-osmosis, electro-migration, hydraulic osmosis, diffusion, adsorption, and thermal diffusion. A comprehensive analysis is conducted to study the effect

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López-García, José, José Horno, and Constantino Grosse. "Numerical Solution of the Electrokinetic Equations for Multi-ionic Electrolytes Including Different Ionic Size Related Effects." Micromachines 9, no. 12 (2018): 647. http://dx.doi.org/10.3390/mi9120647.

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One of the main assumptions of the standard electrokinetic model is that ions behave as point-like entities. In a previous work (López-García, et al., 2015) we removed this assumption and analyzed the influence of finite ionic size on the dielectric and electrokinetic properties of colloidal suspensions using both the Bikerman and the Carnahan–Starling equations for the steric interactions. It was shown that these interactions improved upon the standard model predictions so that the surface potential, electrophoretic mobility, and the conductivity and permittivity increment values were increas

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38

Yin, Yuzhou, Yongping Shan, Dong Ma, et al. "Temperature–Electrokinetic Co-Driven Perfluorooctane Sulfonic Acid (PFOS) Adsorption on Geo-Adsorbents." Processes 11, no. 6 (2023): 1856. http://dx.doi.org/10.3390/pr11061856.

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Per- and polyfluoroalkyl substances (PFAS) have concerned the public due to their worldwide distribution and the threat they pose to drinking water safety and human health. Temperature and DC field-induced electroosmotic flow (EOF) are powerful tools to regulate organic contaminant adsorption and control PFOS (as a typical PFAS) transport in porous media. However, the co-driven mechanisms of temperature–electrokinetic transport of contaminants are still unclear. Here, we investigated the synergistic mechanisms of temperature–electrokinetic co-driven PFOS adsorption on zeolite and activated car

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Saunders, Jon H., Matthew D. Jackson, and Christopher C. Pain. "Fluid flow monitoring in oil fields using downhole measurements of electrokinetic potential." GEOPHYSICS 73, no. 5 (2008): E165—E180. http://dx.doi.org/10.1190/1.2959139.

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Downhole measurements of electrokinetic potential are a promising new technology for hydrocarbon reservoir monitoring. Using a 3D finite-element model combining both multiphase flow and electrokinetic components, we investigated the behavior of electrokinetic (streaming) potential during oil production in a range of reservoir environments. We found that streaming-potential signals originate at fluid fronts and at geologic boundaries where fluid saturation changes. As water encroaches on an oil production well, the streaming-potential signal associated with the water front encompasses the well

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40

Alekseev, D. A., and M. B. Gokhberg. "Tidal generated electric field in the multi-layer structure and the possibilities of its employment for deriving the elastic properties and permeability of the subsurface formations." Физика Земли, no. 2 (April 6, 2019): 168–80. http://dx.doi.org/10.31857/s0002-333720192168-180.

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An analytical solution of pore pressure equations with a perturbation source in the form of lunar-solar tidal deformations is generalized to the case of a model with the arbitrary number of layers. The electric field of electrokinetic nature is calculated. The sensitivity of pore pressure and its vertical derivative to the elastic properties and permeability of rock strata is evaluated. The program code for solving the inverse problem capable of recovering the Biot modulus and Biot coefficient as well as permeability coefficient in a horizontally layered model is developed. The possibilities o

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41

Orazem, Mark E. "(Invited) Sequential Development of Continuous Electro-Osmotic Dewatering for Phosphatic Clay Suspensions." ECS Meeting Abstracts MA2024-01, no. 55 (2024): 2919. http://dx.doi.org/10.1149/ma2024-01552919mtgabs.

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The beneficiation plant associated with a typical Florida phosphate mining operation produces more than 6,300 L/s of a dilute 2-3 wt.% suspension of phosphatic clay. The clay-water suspension is pumped into large impoundments called clay settling areas in which partial separation is achieved by hindered settling and self-consolidation. As clay settles, the supernatant water is recycled for use in the beneficiation plant. A top crust is formed after a few years, but the clay beneath the crust has a large water content and a pseudo-plastic character that limits the amount of weight the settling

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Liu, Weiyu, Yukun Ren, Ye Tao, Hui Yan, Congda Xiao, and Qisheng Wu. "Buoyancy-Free Janus Microcylinders as Mobile Microelectrode Arrays for Continuous Microfluidic Biomolecule Collection within a Wide Frequency Range: A Numerical Simulation Study." Micromachines 11, no. 3 (2020): 289. http://dx.doi.org/10.3390/mi11030289.

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We numerically study herein the AC electrokinetic motion of Janus mobile microelectrode (ME) arrays in electrolyte solution in a wide field frequency, which holds great potential for biomedical applications. A fully coupled physical model, which incorporates the fluid-structure interaction under the synergy of induced-charge electroosmotic (ICEO) slipping and interfacial Maxwell stress, is developed for this purpose. A freely suspended Janus cylinder free from buoyancy, whose main body is made of polystyrene, while half of the particle surface is coated with a thin conducting film of negligibl

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Schakel, M. D., D. M. J. Smeulders, E. C. Slob, and H. K. J. Heller. "Seismoelectric interface response: Experimental results and forward model." GEOPHYSICS 76, no. 4 (2011): N29—N36. http://dx.doi.org/10.1190/1.3592984.

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Understanding the seismoelectric interface response is important for developing seismoelectric field methods for oil exploration and environmental/engineering geophysics. The existing seismoelectric theory has never been validated systematically by controlled experiments. We have designed and developed an experimental setup in which acoustic-to- electromagnetic wave conversions at interfaces are measured. An acoustic source emits a pressure wave that impinges upon a porous sample. The reflected electric-wave potential is recorded by a wire electrode. We have also developed a full-waveform elec

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Shobukhov, Andrey. "Mathematical Model for the Electrokinetic Instability of Electrolyte Flow." EPJ Web of Conferences 224 (2019): 02003. http://dx.doi.org/10.1051/epjconf/201922402003.

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We study a one-dimensional model of the dilute aqueous solution of KCl in the electric field. Our model is based on a set of Nernst-Planck-Poisson equations and includes the incompressible fluid velocity as a parameter. We demonstrate instability of the linear electric potential variation for the uniform ion distribution and compare analytical results with numerical solutions. The developed model successfully describes the stability loss of the steady state solution and demonstrates the emerging of spatially non-uniform distribution of the electric potential. However, this model should be gene

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Yariv, Ehud. "Electrokinetic self-propulsion by inhomogeneous surface kinetics." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 467, no. 2130 (2010): 1645–64. http://dx.doi.org/10.1098/rspa.2010.0503.

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Electrokinetic self-propulsion was conceptually proven in recent experiments wherein bimetallic nano-rods were observed to migrate when placed in aqueous solutions. We present here a systematic theoretical model of the self-propulsion mechanism, analysing the steady-state transport occurring about an autonomously moving inhomogeneous particle. The non-uniform catalysis on the particle surface is modelled via position-dependent cation redox coefficients. The particle shape is axisymmetric but otherwise arbitrary, as are the distributions of the (possibly discontinuous) kinetic coefficients alon

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Derakhshan, S., M. Rezaee, and H. Sarrafha. "Studying Electroosmosis of Viscoplastic Casson Fluid Using Lattice-Poisson-Boltzmann Method." Journal of Mechanics 33, no. 5 (2017): 713–23. http://dx.doi.org/10.1017/jmech.2017.33.

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AbstractA numerical investigation of an electroosmotic flow through a microchannel is presented. Lattice Poisson-Boltzmann method was utilized to determine the effective geometrical and electrokinetic parameters in a microfluidic system. The non-Newtonian fluid model is assumed to be viscoplastic which is suitable for modeling biologic structures. These types of fluids are shown to have a yield stress which affects the velocity profile significantly. Unlike Casson fluid constitutive properties, electrokinetic parameters are shown not to be effective on the yielded region in the microchannel. T

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Veliyev, Fuad, and Aida Aslanova. "Rheophysical Characteristics of Hydrocarbon Flow in Microcracks." International Journal on Engineering, Science and Technology 6, no. 2 (2024): 160–70. http://dx.doi.org/10.46328/ijonest.198.

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The rheophysical aspects of the non-Newtonian behavior of oil-water emulsion during flow in thin channels are considered experimentally. Using the microchannel model it is established that the nonlinear rheological effect in the flow of oil-water emulsion in micro-slits is mainly caused by the value of the electrokinetic potential of the system, by reducing of which it is possible to significantly weaken the non-Newtonian nature of the fluid. To regulate the electrokinetic potential, antistatic additives were used, the optimal concentration of which was established experimentally. Based on the

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Lyu, Chenang, Leo Lou, Matthew J. Powell-Palm, Gideon Ukpai, Xing Li, and Boris Rubinsky. "Individual Microparticle Manipulation Using Combined Electroosmosis and Dielectrophoresis through a Si3N4 Film with a Single Micropore." Micromachines 12, no. 12 (2021): 1578. http://dx.doi.org/10.3390/mi12121578.

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Porous dielectric membranes that perform insulator-based dielectrophoresis or electroosmotic pumping are commonly used in microchip technologies. However, there are few fundamental studies on the electrokinetic flow patterns of single microparticles around a single micropore in a thin dielectric film. Such a study would provide fundamental insights into the electrokinetic phenomena around a micropore, with practical applications regarding the manipulation of single cells and microparticles by focused electric fields. We have fabricated a device around a silicon nitride film with a single micro

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Tang and, G. Y., C. Yang, H. Q. Gong,, C. J. Chai, and, and Y. C. Lam. "On Electrokinetic Mass Transport in a Microchannel With Joule Heating Effects." Journal of Heat Transfer 127, no. 6 (2005): 660–63. http://dx.doi.org/10.1115/1.1865216.

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This study presents a numerical analysis of electrokinetic mass transport in a microchannel with Joule heating effects. A nonuniform electric field caused by the presence of the Joule heating is considered in the model development. Numerical computations for electrokinetic mass transport under Joule heating effects are carried out using the Crank-Nicolson scheme of second-order accuracy in space and time for two different cases: (i) the translating interface and (ii) the dispersion of a finite sample plug. The simulations reveal that the presence of Joule heating not only causes the sample spe

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Schnitzer, Ory, and Ehud Yariv. "The Taylor–Melcher leaky dielectric model as a macroscale electrokinetic description." Journal of Fluid Mechanics 773 (May 14, 2015): 1–33. http://dx.doi.org/10.1017/jfm.2015.242.

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While the Taylor–Melcher electrohydrodynamic model entails ionic charge carriers, it addresses neither ionic transport within the liquids nor the formation of diffuse space-charge layers about their common interface. Moreover, as this model is hinged upon the presence of non-zero interfacial-charge density, it appears to be in contradiction with the aggregate electro-neutrality implied by ionic screening. Following a brief synopsis published by Baygents & Saville (Third International Colloquium on Drops and Bubbles, AIP Conference Proceedings, vol. 7, 1989, American Institute of Physics, p

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