Abstract
Reynold's equation has been used to describe film drainage rate in various investigations of microscopic foam and emulsion films. The main conditions for its applicability are where the liquid flows between plane-parallel surfaces and where film surfaces are tangentially immobile. Because surfaces are deformable and never completely immobile, drainage rate for such films always deviates somewhat from the phenomenon prescribed by Reynolds' equations. This work presents results of an investigation of the dependence of drainage time of foam and emulsion films on film radius. Experimentally measured values are compared to those calculated by numeric integration. 10 references.
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