Article (Scientific journals)
Walking droplets in linear channels
Filoux, Boris; Hubert, Maxime; Schlagheck, Peter et al.
2017In Physical Review Fluids, 2, p. 013601
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Abstract :
[en] When a droplet is placed onto a vertically vibrated bath, it can bounce without coalescing. Upon an increase of the forcing acceleration, the droplet is propelled by the wave it generates and becomes a walker with a well-defined speed. We investigate the confinement of a walker in different rectangular cavities, used as waveguides for the Faraday waves emitted by successive droplet bounces. By studying the walker velocities, we discover that one-dimensional confinement is optimal for narrow channels of width of D≃1.5λF. Thereby, the walker follows a quasilinear path. We also propose an analogy with waveguide models based on the observation of the Faraday instability within the channels.
Disciplines :
Physics
Author, co-author :
Filoux, Boris ;  Université de Liège - ULiège > Département de physique > Physique statistique
Hubert, Maxime ;  Université de Liège - ULiège > Département de physique > Physique statistique
Schlagheck, Peter ;  Université de Liège - ULiège > Département de physique > Physique quantique statistique
Vandewalle, Nicolas  ;  Université de Liège - ULiège > Département de physique > Physique statistique
Language :
English
Title :
Walking droplets in linear channels
Publication date :
2017
Journal title :
Physical Review Fluids
ISSN :
2469-9918
eISSN :
2469-990X
Publisher :
American Physical Society
Volume :
2
Pages :
013601
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Actions de Recherches Concertées (ARC)
Available on ORBi :
since 13 December 2017

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