Effect of the surfactant concentration on the dynamics of bubble cluster rising

The results of an experimental study of the stationary velocity of ascent of a spherical cluster of monodispersed air bubbles in glycerin at various concentrations of a surfactant in the range of Reynolds numbers $<0.1$ are presented. New method for obtaining the cluster of monodispersed bubbles to study the process of ascent of a consolidated system of bubbles is proposed.