TY - JOUR

T1 - Contact angles in the presence of an electrical field

AU - Kupershtokh, A. L.

N1 - Funding Information: The study was supported by the Russian Science Foundation: grants Nos. 16-19-10229 (the method for determining contact angles of sessile droplets in an electric field) and 18-19-00538 (three-dimensional simulations of droplets under the action of an electric field). Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/12/15

Y1 - 2020/12/15

N2 - Three-dimensional computer simulations of the dynamics of sessile droplets in an electric field and without it are carried out on the basis of the lattice Boltzmann method (LBM). The dielectric droplets are placed on the surface of the lower electrode. The electrical and hydrodynamic parts of the problem are solved simultaneously. After application of an electric field, the droplets begin to lengthen in the field direction. The contact angle is measured after the droplet acquires its equilibrium shape. It is shown that the contact angle slightly increases with increasing the electric field due to electrostatic forces. Above a certain critical value of the electrical Bond number, the droplets cannot acquire a stable form, the elongation becomes unlimited, and the droplets are destroyed.

AB - Three-dimensional computer simulations of the dynamics of sessile droplets in an electric field and without it are carried out on the basis of the lattice Boltzmann method (LBM). The dielectric droplets are placed on the surface of the lower electrode. The electrical and hydrodynamic parts of the problem are solved simultaneously. After application of an electric field, the droplets begin to lengthen in the field direction. The contact angle is measured after the droplet acquires its equilibrium shape. It is shown that the contact angle slightly increases with increasing the electric field due to electrostatic forces. Above a certain critical value of the electrical Bond number, the droplets cannot acquire a stable form, the elongation becomes unlimited, and the droplets are destroyed.

UR - http://www.scopus.com/inward/record.url?scp=85098107168&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1675/1/012106

DO - 10.1088/1742-6596/1675/1/012106

M3 - Conference article

AN - SCOPUS:85098107168

VL - 1675

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012106

T2 - 5th All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2020

Y2 - 13 September 2020 through 20 September 2020

ER -