Mass transfer of surfactants and hydrodynamic interaction at small separations in emulsion systems 2. Potential theory

Abstract

Scaling parameters are applied in order to propose a physically adequate asymptotic model for the coupling of the mass transfer of soluble surfactants and the fluid flows in emulsion systems. The hydrodynamic interaction at small gap widths is studied when thin liquid layers are formed. The classical potential theory is used for the numerical calculations. Expressions are obtained for the tangential mobility of the fluid flow interfaces and the drag force in the cases of low and high viscosities of the disperse phase.