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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.

Presenters

  • 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