Features of Electrocoalescence of an Uncharged Droplet With a Water Layer Under the Action of the Alternating Electric Field

In this work, the coalescence of an uncharged water droplet suspended in oil with a layer of water under the action of an alternating electric field was numerically investigated. The coalescence modes were compared in cases of using a constant and an alternating sinusoidal electric field. It was found that the frequency and phase of touching (at frequencies close to the natural frequency of droplet oscillation) have the greatest effect on the volume of the separating droplet, while other parameters contribute less. It is shown that when an alternating electric field is used, a scatter in the values of the volume of the separating droplet appears, which is determined by the phase, at which the droplet touches the layer. When the voltage frequency increases, the volume scatter decreases and tends to the values obtained at the constant voltage.