The effect of surface-active agents on radial free-surface flow
Abstract
The interaction between hydrodynamics and interfacial mass transfer was studied for radial free surface flow. The effects of dilute aqueous solutions of alcohols on the surface velocity were measured. Retardations of the surface velocity and enhancement of the initial acceleration of the free surface were observed. The hydrodynamic model contains the following features: consideration of the tangential shear stress balance at the free surface and evaluation of the gradients of interfacial tension by means of a mass transfer model. Results reveal that adsorptive accumulation of surfactant retards surface motion while convective redistribution of surfactant in the interface tends to increase the initial surface acceleration for radial free surface flow.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1976
- Bibcode:
- 1976PhDT........63R
- Keywords:
-
- Free Flow;
- Surface Reactions;
- Adsorption;
- Flow Velocity;
- Hydrodynamics;
- Interfacial Tension;
- Mass Transfer;
- Fluid Mechanics and Heat Transfer