Simulation of galvanic dynamic mode in membrane hydrocleaning systems taking into account space charge

Коваленко, А. В.; Yzdenova, A. M.; Сухинов, А. И.; Chubyr, N.O.; Urtenov, M Kh

doi:10.1063/1.5138448

Cited by 4 publications

(6 citation statements)

References 5 publications

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“…The software package (program) "Deep learning for CVC 0.1" created by us allows you to get images that simulate the studied processes in the EMC [1][2][3][4], calculate all relevant characteristics, including the CVC [5][6][7][8], generate reports, and get an animated interpretation of the process studied in time .…”

Section: Used Methods and Resultsmentioning

confidence: 99%

“…The program "Deep learning for CVC 0.1" (Figure1), containing databases and knowledge bases of theoretical current-voltage characteristics for deep machine learning, allows you to select specifi c sections of the CVC, for example, the section of the beginning of electroconvection[2][3][4][5][6][7][8] at the Cation Exchange Membrane (CEM) which begins with dfi kom (beginning) and ends with dfi aom (the beginning of electroconvection at the Anion Exchange Membrane (AEM)), the plot of the beginning of electroconvection at the AOM, the site of the beginning of the interaction of electroconvection vortices at the CEM and AEM, and others. In these areas, the software package allows you to conduct Fourier and Wavelet analyses, identify the trend, subtract the CVC from the trend, calculate the fl uctuations amplitude, determine the main and accompanying fl uctuation frequencies, use the results to record the "restored" CVC (I -V characteristic) and compare it with the real one, fi nd the dependence of the CVC on the parameters of the problem with the approximation condition.…”

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confidence: 99%

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Creation of an artificial intelligence system for analysis of theoretical Current-Voltage Curves

Kovalenko¹,

Urtenov²

2020

Trends Comput Sci Inf Technol

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Section: Used Methods and Resultsmentioning

confidence: 99%

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confidence: 99%

Creation of an artificial intelligence system for analysis of theoretical Current-Voltage Curves

Kovalenko¹,

Urtenov²

2020

Trends Comput Sci Inf Technol

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“…In an electric field, negatively charged magnetic particles begin to move towards the anode, and positively charged ones move towards the cathode, so the dense layers form near the electrodes. The model of AWP is based on the mechanism of particle recharging in layers and is a classical system of differential equations [34][35][36][37], without simplifications and fitting parameters: Let x = 0 and x = H be the conditional points at which the process of charging particles takes place (no space charge in x = 0); in a particular case, these can be an anode and a cathode. The initial distribution of neutral particles of a ferrocolloid with a known concentration (initial conditions C 1 (0, x) = C 10 (x) and C 2 (0, x) = C 20 (x)) is determined by diffusion.…”

Section: Mathematical Model Of Forced Synchronization Of An Autowave ...mentioning

confidence: 99%

“…The model of AWP is based on the mechanism of particle recharging in layers and is a classical system of differential equations [34][35][36][37], without simplifications and fitting parameters:…”

Section: Mathematical Model Of Forced Synchronization Of An Autowave ...mentioning

confidence: 99%

Experimental and Theoretical Study of Forced Synchronization of Self-Oscillations in Liquid Ferrocolloid Membranes

2022

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A ferrocolloid is a suspension of nanometer-sized ferromagnetic particles (magnetite) in a carrier liquid (kerosene). A unique feature of a ferrocolloid is the fact that layers consisting of densely packed particles are formed near the electrode surface under the influence of an external electric field. Each layer is a liquid membrane, and its formation significantly affects the various properties of the system. For example, the development of a unique phenomenon in a ferrocolloid is self-organization (self-oscillations and autowaves). The applied external periodic force leads to a change (capture) of the frequency of the autowave process-forced synchronization of autowaves. The experimentally obtained synchronization was investigated by the method of electrically controlled interference. After multiple experiments and theoretical studies, a physical mechanism for the synchronization of the autowave process in a cell with a ferrocolloid was proposed for the first time. A mathematical model of forced synchronization of autowaves, which is described by a system of nonlinear differential equations, was proposed for the first time as well. Adding an external periodic force into the model led to a change in the frequency of autowaves; synchronization by an external force was confirmed by computational experiments.

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“…The peculiarity of electroconvection in the presence of forced convection is the presence of a different potential drop at which it occurs. In addition, electroconvection, which initially develops as a stable process, gradually becomes unstable with increasing potential drop, passing through a number of stages of bifurcations of electroconvective vortices and their interaction [ 43 , 44 , 45 , 46 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of the Influence of Spacers on Salt Ion Transport in Electromembrane Systems Considering the Main Coupled Effects

Kovalenko,

Urtenov,

Chekanov

et al. 2024

Membranes

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This article considers a theoretical analysis of the influence of the main coupled effects and spacers on the transfer of salt ions in electromembrane systems (EMS) using a 2D mathematical model of the transfer process in a desalting channel with spacers based on boundary value problems for the coupled system of Nernst–Planck–Poisson and Navier–Stokes equations. The basic patterns of salt ion transport have been established, taking into account diffusion, electromigration, forced convection, electroconvection, dissociation/recombination reactions of water molecules, as well as spacers located inside the desalting channel. It has been shown that spacers and taking into account the dissociation/recombination reaction of water molecules significantly change both the formation and development of electroconvection. This article confirms the fact of the exaltation of the limiting current studied by Harkatz, where it is shown that the current (flux) of salt ions increases when the dissociation reaction begins by a certain value called the exaltation current, which is proportional to the flow of water dissociation products. A significant combined effect of electroconvection and dissociation/recombination reactions as well as the spacer system in the desalting channel on the transport of salt ions are shown. The complex, nonlinear, and non-stationary interaction of all the main effects of concentration polarization and spacers in the desalting channel are also considered in the work.

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Simulation of galvanic dynamic mode in membrane hydrocleaning systems taking into account space charge

Cited by 4 publications

References 5 publications

Creation of an artificial intelligence system for analysis of theoretical Current-Voltage Curves

Creation of an artificial intelligence system for analysis of theoretical Current-Voltage Curves

Experimental and Theoretical Study of Forced Synchronization of Self-Oscillations in Liquid Ferrocolloid Membranes

Theoretical Analysis of the Influence of Spacers on Salt Ion Transport in Electromembrane Systems Considering the Main Coupled Effects

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