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Spreading of a droplet on a solid surface

✍ Scribed by Albert E. Seaver; John C. Berg

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
453 KB
Volume
52
Category
Article
ISSN
0021-8995

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✦ Synopsis

The spontaneous spreading of small liquid droplets on solid surfaces is examined with the objective of developing closed-form expressions for the spreading dynamics, both for the case in which there is complete equilibrium spreading, that is the equilibrium contact angle is Oo, and for the case in which equilibrium spreading is incomplete. Such solutions are obtained using a simple hydrodynamic model. The results are consistent with the format of the uniuersal Hoffman-Voinov-Tanner law (for complete spreading) and the modified Hoffman-Voinov-Tanner law for incomplete spreading. In the latter case, concurrence is found only when the dynamic contact angle is close to the equilibrium angle throughout the spreading process.

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