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Drops sliding down an incline at large contact line velocity: What happens on the road towards rolling?

Published online by Cambridge University Press:  05 December 2013

Laurent Limat
Laurent Limat*
Affiliation:
Matière et Systèmes Complexes, UMR 7057 of CNRS, and Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, 75013 Paris, France
*
†Email address for correspondence: [email protected]
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Abstract

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Drops sliding down an incline exhibit fascinating shapes, which indirectly provide a great deal of information about wetting dynamics. Puthenveettil, Kumar & Hopfinger (J. Fluid Mech., vol. 726, 2013, pp. 26–61) have renewed this subject by considering water and mercury drops sliding at high speed. The results raise puzzling questions: how to take into account inertia at a high-speed contact line, large contact angles, the nature of the dissipation at small scale and sliding versus rolling behaviours?

JFM classification

Interfacial Flows (free surface): Capillary flows Interfacial Flows (free surface): Contact lines Drops and Bubbles: Drops
Type
Focus on Fluids
Information
Journal of Fluid Mechanics , Volume 738 , 10 January 2014 , pp. 1 - 4
Copyright
©2013 Cambridge University Press 

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