Abstract
Experiments were carried out to study the effect of concentration differences on the surface-velocity distribution. The surface-velocity induced by feeding the surface-tension lowering material onto the surface of the stagnant liquid was measured in a similar type of apparatus to that used by Ruckenstein et al. [1]. The system studied was ethanol-water. From the experimental results, the dependence of surface-velocity distribution on the bulk viscosity of the solution, degree of surface contamination and concentration and feed rate of alcohol, was discussed.
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