Dimple drainage before the coalescence of a droplet deposited on a smooth substrate
2020 ◽
Vol 117
(34)
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pp. 20416-20422
Thin liquid or gas films are everywhere in nature, from foams to submillimetric bubbles at a free surface, and their rupture leaves a collection of small drops and bubbles. However, the mechanisms at play responsible for the bursting of these films is still in debate. The present study thus aims at understanding the drainage dynamics of the thin air film squeezed by gravity between a millimetric droplet and a smooth solid or a liquid thin film. Solving coupled lubrication equations and analyzing the dominant terms in the solid- and liquid-film cases, we explain why the drainage is much faster in the liquid-film case, leading often to a shorter coalescence time, as observed in recent experiments.
1986 ◽
Vol 44
◽
pp. 732-733
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Keyword(s):
2003 ◽
Vol 475
◽
pp. 377-408
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Keyword(s):
Keyword(s):
Estimates of the effect of a plasma momentum flux on the free surface of a thin film of liquid metal
1995 ◽
Vol 28
(1-2)
◽
pp. 176-180
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