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Soluble surfactants adsorb to rising clouds of micro-bubbles and are subsequently deposited on the surface of the bulk liquid. The adsorbed surfactant leads to strongly increased damping of capillary waves, when compared to the damping rate of capillary waves on a clean surface. A theory is developed for the nonlinear dynamics of a bubble cloud, surfactant scavenging, and capillary wave damping. The...
Mesler entrainment is the formation of a very large number of very small bubbles by a relatively low velocity drop impacting a liquid surface. The role of the Weber number in Mesler entrainment has received significant attention. However, the effect of the capillary number, which quantifies the relative importance of viscous and surface tension forces, has not been explored. This is due primarily...
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