Gravity wave turbulence revealed

by horizontal vibrations of the container

B. Issenmann & E. Falcon
Univ Paris Diderot, Sorbonne Cité, MSC, CNRS, UMR 7057, F-75 013 Paris, France, EU

Reference:  Physical Review E 87, 011001(R) (2013)

DOI: 10.1103/PhysRevE.87.011001


We experimentally study the role of the forcing on gravity-capillary wave turbulence. Previous laboratory experiments using spatially localized forcing (vibrating blades) have shown that the frequency power-law exponent of the gravity wave spectrum depends on the forcing parameters. By horizontally vibrating the whole container, we observe a spectrum exponent that does not depend on the forcing parameters for both gravity and capillary regimes. This spatially extended forcing leads to a gravity spectrum exponent in better agreement with the theory than by using a spatially localized forcing. The role of the vessel shape has been also studied. Finally, the wave spectrum is found to scale linearly with the injected power for both regimes whatever the forcing type used.

PACS : 47.35.-i   Hydrodynamic waves
             05.45.-a  Nonlinear dynamics and chaos
            47.52.+j   Chaos in fluid dynamics
            47.27.-i    Turbulent flows

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