A practical way to model convection in non-agitated electrolytes
authors Dolgikh, O; Demeter, AS; Bastos, AC; Topa, V; Deconinck, J
nationality International
journal ELECTROCHEMISTRY COMMUNICATIONS
author keywords Multi-ion transport; Micro-convection; Numerical modelling; FEM simulation
keywords NATURAL-CONVECTION; CONCENTRATION PROFILES; TRANSPORT; ELECTRODES; SIMULATION; MASS
abstract Many electrochemical experiments are performed in non-agitated or in non-controlled flow conditions. When such measurements are modelled considering convection, diffusion, migration and reactions, the problem of describing a suitable velocity field arises immediately. Based on the work of Amatore (2001), we present a workable approach that avoids solving the velocity fields in multi-ion modelling. The convection is treated as a diffusion term that becomes dominant from a certain distance from the wall (electrode). This implies that mass transfer becomes irrelevant from that distance on and that there is a fluent transition from the diffusion layer to the bulk of the solution. The theory is elaborated and two examples clearly show the applicability. (C) 2013 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE INC
issn 1388-2481
year published 2013
volume 37
beginning page 20
ending page 23
digital object identifier (doi) 10.1016/j.elecom.2013.10.002
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000329085700006
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journal analysis (jcr 2017):
journal impact factor 4.660
5 year journal impact factor 4.534
category normalized journal impact factor percentile 80.357
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