Reference : Resonant and rolling droplet
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/22573
Resonant and rolling droplet
English
Dorbolo, Stéphane mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
Terwagne, Denis mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
Vandewalle, Nicolas mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
Gilet, Tristan mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
18-Nov-2008
New Journal of Physics
Institute of Physics
10
Yes (verified by ORBi)
International
1367-2630
Bristol
United Kingdom
[en] When an oil droplet is placed on a quiescent oil bath, it eventually collapses into the bath due to gravity. The resulting coalescence may be eliminated when the bath is vertically vibrated. The droplet bounces periodically on the bath, and the air layer between the droplet and the bath is replenished at each bounce. This sustained bouncing motion is achieved when the forcing acceleration is higher than a threshold value. When the droplet has a sufficiently low viscosity, it significantly deforms: spherical harmonic Y-1(m) modes are excited, resulting in resonant effects on the threshold acceleration curve. Indeed, a lower acceleration is needed when I modes with m = 0 are excited. Modes m not equal 0 are found to decrease the bouncing ability of the droplet. A break of degeneracy is observed for the m parameter. In particular, when the mode 1 = 2 and m = 1 is excited, the droplet rolls on the vibrated surface without touching it, leading to a new self-propulsion mode.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/22573
10.1088/1367-2630/10/11/113021

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
2008_dorbolo_NJP.pdfPublisher postprint1.29 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.