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COEXISTENCE OF LOCALIZED STRUCTURES AND PATTERNS IN FARADAY INSTABILITY FOR HIGH DISSIPATIVE FLUIDS

CECILIA CABEZA

Instituto de Física, Facultad de Ciencias, Iguá 4225, CP 11400, Uruguay

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CARLOS NEGREIRA

Instituto de Física, Facultad de Ciencias, Iguá 4225, CP 11400, Uruguay

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VINCENT GIBIAT

LAMI University Paul Sabatier 118, route de Narbonne 31062 Toulouse, France

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https://doi.org/10.1142/S0218127404011387Cited by:1 (Source: Crossref)

Abstract

We present an experimental study of the generation of strongly localized structures that propagate on the surface of a dissipative fluid. We excited a layer of fluid with a vertical periodic acceleration field, and a parametric instability occurs when a certain threshold value is achieved. This process is known as Faraday Instability and the temporal evolution of the system obeys a period-doubling route. For a highly dissipative fluid we observed two new interesting phenomena: the generation of high spatially localized structures which propagate on top of the stripes of stationary pattern, and a periodic window which occurs after the system reached spatiotemporal chaos.

Keywords:

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