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Article Dans Une Revue Physical Review Letters Année : 2005

Transition to Spatiotemporal Chaos in a Two-Dimensional Hydrodynamic System

Résumé

We study the transition to spatiotemporal chaos in a two-dimensional hydrodynamic experiment where liquid columns take place in the gravity induced instability of a liquid film. The film is formed below a plane grid which is used as a porous media and is continuously supplied with a controlled flow rate. This system can be either ordered (on a hexagonal structure) or disordered depending on the flow rate. We observe, for the first time in an initially structured state, a subcritical transition to spatiotemporal disorder which arises through spatiotemporal intermittency. Statistics of numbers, creations, and fusions of columns are investigated. We exhibit a critical behavior close to the directed percolation one.
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Dates et versions

hal-00013434 , version 1 (08-11-2005)

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Christophe Pirat, Aurore Naso, Jean-Louis Meunier, Philippe Maissa, Christian Mathis. Transition to Spatiotemporal Chaos in a Two-Dimensional Hydrodynamic System. Physical Review Letters, 2005, 94, pp.134502. ⟨10.1103/PhysRevLett.94.134502⟩. ⟨hal-00013434⟩
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