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Rival contact-angle models and the spreading of drops

Published online by Cambridge University Press:  26 April 2006

L. M. Hocking
L. M. Hocking
Affiliation:
Department of Mathematics, University College London, Gower Street, London WC1E 6BT
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Abstract

The spreading of a drop of viscous fluid on a horizontal surface by capillarity has been studied by a number of authors. Different hypotheses have been advanced for the crucial questions of the contact angle at the moving rim of the drop. It is argued that there is one model that agrees with experiments and is economical in its hypotheses. On the basis of this model, the spreading rate is calculated for small static contact angles and for complete wetting (zero contact angle). The rates are also found when the spreading depends partially or dominantly on gravity.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 239 , June 1992 , pp. 671 - 681
Copyright
© 1992 Cambridge University Press

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