An OpenFOAM-integrated Numerical Solver for Electroconvective Flow
Main Article Content
Abstract
In this work, we developed a numerical solver, integrated in OpenFOAM platform, for modeling electroconvective. The solver deals with the system of Poisson-Nernst-Planck-Navier-Stokes equations. The finite volume schemes functioned in OpenFOAM was used for discretisation of the Poisson-Nernst-Planck equations. The Newton method was employed to solve the nonlinear Poisson-Nernst-Planck equations in a coupled manner. The validation shows that the high accuracy of our solver. It is used to investigate ion conduction in the electrodialysis cell. The simulation results have allowed to examine the flow’s profile, ion distribution in different regimes of the system. Especially, the mechanisms behind the voxtex formation in the channel can be explained by these results. This solver developed on OpenFoam open-source code provides the research community with a valuable tool for the study of the electrochemical problems.
Keywords
Poisson-Nernst-Planck-Navier-Stokes, electrokinetic, ion concentration polarization
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
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Nonlinear, Soft Matter Phys., vol. 86, no. 4. 2012.
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Interdiscip. Top, vol. 62, no. 2, pp. 2238–2251. 2000.
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nanofluidic channels, Nano Letters, 2004 4 (1),
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efficiency, J. Mater. Chem. A, vol. 6, no. 17, pp. 7714–
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https://doi.org/10.1039/c7ta10570c.
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ion concentration polarization desalination: A new way
to enhance electromembrane desalination, Water Res,
vol. 159, pp. 501–510. 2019
https://doi.org/10.1016/j.watres.2019.05.042.
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Direct numerical simulation of electroconvective
instability and hysteretic current-voltage response of a
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Nonlinear, Soft Matter Phys, vol. 86, no. 4, pp. 1–11.
2012.
https://doi.org/10.1103/PhysRevE.86.046310.
[10] S. V. Pham, H. Kwon, B. Kim, J. K. White, G. Lim, and
J. Han, Helical vortex formation in three-dimensional
electrochemical systems with ion-selective
membranes, Phys. Rev. E, vol. 93, no. 3. 2016.
https://doi.org/10.1103/PhysRevE.93.033114.
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numerical simulation of electroconvective instability
and hydrodynamic chaos near an ion-selective surface,
Phys. Fluids, vol. 25, no. 11. 2013.
https://doi.org/10.1063/1.4818995.
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electrokinetics at the nanoscale: A perspective,
Biomicrofluidics, vol. 3, no. 1, pp. 1–16. 2009.
https://doi.org/10.1063/1.305604