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Follow the guide
Filoux, Boris; Hubert, Maxime; Vandewalle, Nicolas
2015Belgian Physical Society
 

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Keywords :
Fluid Mechanics; Boucing and Walking Droplets; Faraday Instability
Abstract :
[en] When gently placing a droplet onto a vertically vibrated bath, under specific conditions, coalescence may be avoided. The drop bounces permanently. Upon increasing the forcing acceleration, the drop interacts with the wave it generates, and becomes a walker [1,2]. Recently, some 2D confining systems for walking droplets have been developed: cylindrical cavity, harmonic potential or the use of Coriolis force [3,4]. In addition, the interactions between two identical walkers have been studied in a 2D case [5]. Nevertheless, no study focuses on 1D dynamics and their properties. In this work, we show it is possible to confine a walker in a quasi mono-dimensional geometry by using a submerged annular cavity. We focus on the interactions between droplets, and show the interdistance quantization. Then, we study the speed of pairs of walkers and show that the distance between the drops affects the group speed: the closer the drops are, the faster they move. We also propose a numerical model to characterize the distance quantization, and the evolution of the speed of a string of droplets. Finally, we investigate the case of a string of droplets. We discuss the influence of the number of droplets and the distance between droplets on the string speed. 1. Y. Couder, S. Protière, E. Fort, and A. Boudaoud, Nature 437, 208 (2005).
 2. S. Protière, A. Boudaoud, and Y. Couder, J. Fluid Mech. 554, 85 (2006).
 3. S. Perrard, M. Labousse, M. Miskin, E. Fort, and Y. Couder, Nat. Commun. 5, 3219 (2014).
 4. M. Labousse and S. Perrard, Phys. Rev. E 90, 022913 (2014).
 5. C. Borghesi, J. Moukhtar, M. Labousse, A. Eddi, E. Fort, and Y. Couder, Phys. Rev. E 90, 063017 (2014).
Disciplines :
Physics
Author, co-author :
Filoux, Boris ;  Université de Liège > Département de physique > Physique statistique
Hubert, Maxime ;  Université de Liège > Département de physique > Physique statistique
Vandewalle, Nicolas  ;  Université de Liège > Département de physique > Physique statistique
Language :
English
Title :
Follow the guide
Publication date :
13 May 2015
Event name :
Belgian Physical Society
Event organizer :
ULg - Université de Liège
Event place :
Liège, Belgium
Event date :
13 mai 2015
Audience :
International
Name of the research project :
Quandrops
Funders :
Quandrops ARC
Available on ORBi :
since 12 January 2017

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