Propagating oscillons in a 1Dim. Faraday experiment
ORAL
Abstract
We present the first experimental evidence of the existence of trains of propagating oscillons or localized structures in a 1D Faraday experiment in water.
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.
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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Presenters
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Jose Wesfreid
PMMH, ESPCI PARIS
Authors
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Jose Wesfreid
PMMH, ESPCI PARIS
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Samantha Kucher
DF-FCEN, University of Buenos Aires
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Pablo Cobelli
DF-FCEN, University of Buenos Aires