Perforation of thin Liquid Films under the Action of an Inhomogeneous Electric Field
A. L. Kupershtokh, D. A. Medvedev
Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: method of lattice Boltzmann equations, dynamics of multiphase media, liquid dielectrics, electric field, computer modeling, parallel computations on graphics accelerators
Abstract
A non-stationary electrohydrodynamic model has been developed to describe the behavior of a dielectric liquid film on the electrode surface in the surrounding gas. It has been shown that the action of an inhomogeneous electric field can lead to perforation of the film with the formation of new contact lines. The field inhomogeneity was created using a round insulating insert in the center of the lower electrode. The perforation process is determined by the electric field strength, film thickness, the radius of the non-conductive insert, and the contact angle between the liquid and the solid substrate.
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