New methods for studying the evaporation rate of liquid-drop aerosols
V.A. Arkhipov, S.A. Basalaev, N.N. Zolotorev, K.G. Perfilieva, A.S. Usanina
National Research Tomsk State University, Tomsk, Russia
Keywords: single drop, cluster of drops, radiant heat flux, convective heat flux, high-temperature gaseous medium, evaporation rate, experimental study
Abstract
Results of experimental studies of the common factors of evaporation of a single drop and a cluster of liquid drops are presented. New method for determining the evaporation rate of a single drop at radiant flux heating of a given intensity is suggested. The effect of radiant and convective flux heating on the evaporation dynamics of a single motionless drop is analyzed. The effect of absorption coefficient of the liquid on the evaporation rate of the single drop at radiant heating is found. A new method and experimental setup are developed for studying the evaporation dynamics of a cluster of monodisperse liquid drops during their gravitational settling in a high-temperature gaseous medium. Specific features of the evaporation of clusters moving in a high-temperature gaseous medium are studied. It is shown that the evaporation rate of a cluster depends on number and initial concentration of drops in it.
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