Cornered drops and rivulets - Archive ouverte HAL Access content directly
Journal Articles Physics of Fluids Year : 2007

Cornered drops and rivulets

Abstract

We present theoretical and experimental results for a drop of viscous liquid running down an inclined plane at speed U⁠. For U>Ucr the rear of the drop forms a corner whose opening half-angle ϕ decreases with U⁠. By matching the interior of the drop to the contact line, we calculate ϕ analytically. We find that above a second critical speed Uriv this solution no longer exists and instead a slender rivulet comes out of the tip of the corner. To compute the width of the rivulet, we match it to the front of the drop, where it is rounded. Our theoretical results on the opening angle, the rivulet width and the drop velocity are in good agreement with experiment.
No file

Dates and versions

hal-00357812 , version 1 (02-02-2009)

Identifiers

Cite

Jacco H Snoeijer, Nolwenn Le Grand-Piteira, Laurent Limat, Howard A. Stone, Jens Eggers. Cornered drops and rivulets. Physics of Fluids, 2007, 19 (4), pp.042104. ⟨10.1063/1.2722767⟩. ⟨hal-00357812⟩
42 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More