Acoustic Radiation of Charged Droplets Oscillating in the Superposition of Gravitational and Electrostatic Fields

Grigor’ev, A.I.; Kolbneva, N.Y.; Shiryaeva, S.O.

Авторы: Grigor’ev A.I., Kolbneva N.Yu, Shiryaeva S.O.
Журнал: Colloid Journal
Том: 85
Номер: 1
Год издания: 2023
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 1
Последняя страница: 15
Оригинальные версии: Акустическое излучение заряженной капли, осциллирующей в суперпозиции гравитационного и электростатического полей
DOI: 10.1134/S1061933X2260052X
Аннотация: The intensity of acoustic radiation and the characteristic widths (depending on the radii andcharges of the drops) of the frequency ranges in which the radiation falls have been calculated for chargeddroplets of convective clouds and near-ground fogs, which are immobile in the superposition of gravitationaland electric fields. The calculations have been carried out using the methods of classical mathematical physicstaking into account two small parameters: the dimensionless oscillation amplitude and the equilibriumspheroidal deformation of a charged droplet in an external electrostatic field. All calculations have been performedusing the model of an ideal incompressible electroconducting liquid. It has turned out that the acousticradiation from clouds and fogs occurs in the ultrasonic frequency range, while the acoustic radiation oflarge rain-drops is in the acoustic range audible to the human ear. The boundary between the ultrasonic andsonic radiations is determined by droplet sizes, electric field strengths (in a small vicinity of the droplets), andthe values of interfacial tension coefficient.
Добавил в систему: Григорьев Александр Иванович

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