A model for static foam drainage

Ramani, M. V. ; Kumar, R. ; Gandhi, K. S. (1993) A model for static foam drainage Chemical Engineering Science, 48 (3). pp. 455-465. ISSN 0009-2509

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/000925...

Related URL: http://dx.doi.org/10.1016/0009-2509(93)80300-F


A model for static foam drainage, based on the pentagonal dodecahedral shape of bubbles, that takes into account the surface mobility of both films and Plateau border walls has been developed. The model divides the Plateau borders into nearly horizontal and nearly vertical categories and assigns different roles to them. The films are assumed to drain into all the adjacent Plateau borders equally. The horizontal Plateau borders are assumed to receive liquid from films and drain into vertical Plateau borders, which in turn form the main component for gravity drainage. The model yields the liquid holdup values for films, horizontal Plateau borders and vertical Plateau borders as functions of height and time. The model has been tested on static foams whose cumulative drainage was measured as a function of time. The experimental data on the effect of foam height, initial holdup, surface viscosity, etc. can be explained by the model quantitatively.

Item Type:Article
ID Code:11509
Deposited On:16 Nov 2010 13:52
Last Modified:02 Jun 2011 05:54

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