Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session M20: Turbulence & Nonlinear Dynamics
11:15 AM–1:27 PM,
Wednesday, March 4, 2020
Room: 301
Sponsoring
Units:
DFD GSNP
Chair: Joel Newbolt, Harvard University
Abstract: M20.00001 : Propagating oscillons in a 1Dim. Faraday experiment
View Presentation Abstract
Presenter:
Jose Wesfreid
(PMMH, ESPCI PARIS)
Authors:
Jose Wesfreid
(PMMH, ESPCI PARIS)
Samantha Kucher
(DF-FCEN, University of Buenos Aires)
Pablo Cobelli
(DF-FCEN, University of Buenos Aires)
The fluid layer, contained within a thin annular vessel, is excited with a periodic vertical acceleration.
Far beyond the threshold for Faraday instability, we have found the formation of localized structures with high nonlinear profile. In particular, we have observed cases where several structures form and propagate around the annulus at a constant velocity while keeping their relative individual position and amplitude.
On the other hand, our experiments show that by phase-modulating the acceleration (driving) field it is possible to generate several individual trains of such structures distributed symmetrically over the annular region.
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