Dynamics of the formation of an aerosol cloud during the destruction of liquid macro-volume
V.A. Arkhipov, S.A. Basalaev, N.N. Zolotorev, K.G. Perfilieva, A.S. Usanina
National Research Tomsk State University, Tomsk, Russia
Keywords: макрообъем жидкости, гравитационное осаждение, аэрозольное облако, неустойчивость Рэлея-Тейлора, число Бонда, число Вебера, экспериментальное исследование, liquid macro-volume, gravitational sedimentation, aerosol cloud, Rayleigh-Taylor instability, Bond number, Weber number, experimental study
Abstract
The results of an experimental study of dynamics of the formation of liquid-drop aerosol cloud during the destruction of a spherical liquid core with an initial volume of 2-80 ml during its gravitational sedimentation are presented. The system of similitude criteria which determines the dynamics of the destruction of a liquid macro-volume with the formation of a polydisperse liquid-drop aerosol cloud was derived by the Rayleigh method. It is shown that the prevailing mechanism of the decay of the liquid macro-volume is the development of Rayleigh-Taylor instability when the critical value of the Bond number is reached. A criterion equation is derived for determining the distance passed by a liquid macro-volume to its complete destruction from the Bond number characterizing the influence of surface tension forces. The maximum droplet size in the aerosol cloud was estimated depending on the critical value of the Weber number.
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