Abstract
In conditions of partial wetting and at sufficiently high capillary number Ca, a dynamic contact line that recedes on a solid surface assumes a 'saw-tooth' shape. We show that the flow inside this liquid 'corner' is a similarity solution of the lubrication equations governing steady thin-film flows in which the free surface is cone shaped. The interface slope Φ#169; defined in its symmetry plane is linked to the corner angle 2φ by the approximate relationship Φ#169;3≈(3/2) Catan2φ. We also suggest a possible explanation of droplet emission from the corner which occurs when φ reaches π/6.
Original language | English |
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Pages (from-to) | 103-110 |
Number of pages | 7 |
Journal | Comptes Rendus Physique |
Volume | 3 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2002 |
Keywords
- wetting
- dewetting
- contact lines
- film flows
- singularities
- lubrication theory