PERFORATION OF THIN LIQUID FILMS UNDER THE ACTION OF A NONUNIFORM ELECTRIC FIELD

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 application of a nonuniform electric field can lead to perforation of the film with the formation of new cont...

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Bibliographic Details
Published inJournal of applied mechanics and technical physics Vol. 63; no. 6; pp. 923 - 930
Main Authors Kupershtokh, A. L., Medvedev, D. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2022
Springer Nature B.V
Subjects
Applications of Mathematics
Classical and Continuum Physics
Classical Mechanics
Contact angle
Electric contacts
Electric field strength
Electrodes
Electrohydrodynamics
Film thickness
Fluid- and Aerodynamics
Mathematical Modeling and Industrial Mathematics
Mechanical Engineering
Nonuniformity
Physics
Physics and Astronomy
Substrates
Thin films
lattice Boltzmann method
computer simulation
electric field
parallel computations on graphics accelerators
liquid dielectrics
dynamics of multiphase media
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Summary: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 application of a nonuniform electric field can lead to perforation of the film with the formation of new contact lines. Field nonuniformity was produced using a round insulating insert at 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.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894422060025