Electrokinetic effects near the space-inhomogeneous electroactive surfaces

Authors

  • Kiriy V.A. Financial University under the government of the Russian Federation, Krasnodar branch, Krasnodar, Российская Федерация
  • Kalaydin E.N. Financial University under the government of the Russian Federation, Krasnodar branch, Krasnodar, Российская Федерация

UDC

537.6

Abstract

This manuscript considers the model of non-homogeneous membrane having alternating conductive and non-conductive areas. Numerically investigated the hydrodynamics near a membrane under the influence of an external electric field. The effect on the system two mechanisms — Dukhina vortex formation and Rubinstein-Saltzman. It is shown that the predominant mechanism Dukhina except for a narrow region of potential difference values. It was found that for a small amount of non-conductive areas and the main contribution of the system impedance makes the electrolyte resistance, and at large - the conductivity of the membrane. Detected a pronounced maximum current through the membrane, depending on the coverage ratio, where the current intensification can reach 60%.

Keywords:

system Nernst-Planck-Poisson-Stokes, heterogeneous membrane, overlimiting current, electrokinetic instability, electrolyte

Acknowledgement

Работа выполнена при поддержке РФФИ (15-58-45123-Инд_а, 14-08-01171_а).

Author Infos

Vladimir A. Kiriy

преподаватель кафедры математики и информатики Краснодарского филиала Финансового университета при Правительстве Российской Федерации

e-mail: vladimir@kiriy.ru

Evgeniy N. Kalaydin

д-р физ.-мат. наук, заведующий кафедрой математики и информатики Краснодарского филиала Финансового университета при Правительстве Российской Федерации

e-mail: ENKalaydin@fa.ru

References

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Issue

2016. No. 3

Pages

43-49

Submitted

2016-08-31

Published

2016-09-30

How to Cite

Kiriy V.A., Kalaydin E.N. Electrokinetic effects near the space-inhomogeneous electroactive surfaces. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2016, no. 3, pp. 43-49. (In Russian)

Copyright (c) 2016 Kiriy V.A., Kalaydin E.N.

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This work is licensed under a Creative Commons Attribution 4.0 International License.