Interfacial Phenomena and Heat Transfer
Published 4 issues per year
ISSN Print: 2169-2785
ISSN Online: 2167-857X
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APPLICATION OF THE NONLINEAR POISSON-BOLTZMANN MODEL TO THE STABILITY OF AN ELECTROLYTE FILM
Volume 2,
Issue 1, 2014,
pp. 75-84
DOI: 10.1615/InterfacPhenomHeatTransfer.2014010040
ABSTRACT
The stability of a thin liquid film of an electrolyte on a solid substrate is investigated. The effects of surface tension, viscous flow, and electric field described by the nonlinear Poisson-Boltzmann equation are considered in the framework of a lubrication-type model. Conditions for film breakup due to electrostatic interaction of interfacial charges are investigated. Linear stability criteria are formulated using elliptic integrals. Nonlinear evolution of the film is then investigated using numerical finite-difference-based methods. Comparison to the predictions of the approximate Debye-Huckel model is discussed.
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