Dynamics of a monosize drops cluster rising in another immiscible liquid with a surfactant
V.A. Arkhipov, A.S. Usanina
National Research Tomsk State University, Tomsk, Russia
Keywords: drop cluster, surfactant, initial volume concentration, drag coefficient, experimental study
Abstract
The results of an experimental study of the rising process of a cluster of monosize drops of isoparaffin oil in an water-glycerol solution in the presence and absence of surfactant at the interface are presented. The flow for the Reynolds numbers range Re=0,01÷1 was studied. The effect of initial volume concentration of drops in a cluster on the rising dynamics was evaluated. New experimental data on the drag coefficient for a cluster of monosize drops uprising in a liquid with/without surfactant at the interface were obtained.
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