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J. Fluid Mech. (2004), vol. 512, pp. 133151. c 2004 Cambridge University Press DOI: 10.1017/S0022112004009747 Printed in the United Kingdom
 

Summary: J. Fluid Mech. (2004), vol. 512, pp. 133­151. c 2004 Cambridge University Press
DOI: 10.1017/S0022112004009747 Printed in the United Kingdom
133
Shapes of rolling liquid drops
By PASCALE AUSSILLOUS1,2
AND DAVID QU ´ER ´E2
1
Institute of Theoretical Geophysics, Department of Applied Mathematics and Theoretical Physics,
University of Cambridge, CMS, Wilberforce road, Cambridge CB3 0WA, UK
2
Laboratoire de Physique de la Mati`ere Condens´ee, UMR 7125 du CNRS, Coll`ege de France,
75231 Paris Cedex 05, France
(Received 6 August 2003 and in revised form 11 March 2004)
We describe here liquid drops in rotation, and first classify the different shapes
possible. Then, we study the behaviour of liquid marbles, which are droplets coated
with hydrophobic grains, running down inclines. Because these marbles roll as they
move, this device allows us to achieve revolving drops. We report the different forms
generated during the descent, and quantify their size by way of scaling arguments. We
finally focus on the transformations which may occur between different drop shapes.
1. Introduction

  

Source: Aussillous, Pascale - Polytech Marseille

 

Collections: Physics; Engineering