dorsal/arxiv
View SchemaMultistability and memory effect in a highly turbulent flow: experimental evidence for a global bifurcation
| Authors | Florent Ravelet, Louis Marie, Arnaud Chiffaudel, Francois Daviaud |
|---|---|
| Categories | |
| ArXiv ID | physics/0409112 |
| URL | https://arxiv.org/abs/physics/0409112 |
| DOI | 10.1103/PhysRevLett.93.164501 |
Abstract
We report an experimental evidence of a global bifurcation on a highly turbulent von Karman flow. The mean flow presents multiple solutions: the canonical symmetric solution becomes marginally unstable towards a flow which breaks the basic symmetry of the driving apparatus even at very large Reynolds number. The global bifurcation between these states is highly subcritical and the system thus keeps a memory of its history. The transition recalls low-dimension dynamical systems transitions and exhibits a very peculiar statistics. We discuss the role of turbulence in two ways: the multiplicity of hydrodynamical solutions and the effect of fluctuations on the nature of transitions.
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"abstract": "We report an experimental evidence of a global bifurcation on a highly\nturbulent von Karman flow. The mean flow presents multiple solutions: the\ncanonical symmetric solution becomes marginally unstable towards a flow which\nbreaks the basic symmetry of the driving apparatus even at very large Reynolds\nnumber. The global bifurcation between these states is highly subcritical and\nthe system thus keeps a memory of its history. The transition recalls\nlow-dimension dynamical systems transitions and exhibits a very peculiar\nstatistics. We discuss the role of turbulence in two ways: the multiplicity of\nhydrodynamical solutions and the effect of fluctuations on the nature of\ntransitions.",
"arxiv_id": "physics/0409112",
"authors": [
"Florent Ravelet",
"Louis Marie",
"Arnaud Chiffaudel",
"Francois Daviaud"
],
"categories": [
"physics.flu-dyn"
],
"doi": "10.1103/PhysRevLett.93.164501",
"title": "Multistability and memory effect in a highly turbulent flow: experimental evidence for a global bifurcation",
"url": "https://arxiv.org/abs/physics/0409112"
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