Discontinuous transition to spatiotemporal intermittency in plane Couette flow
| Autor: | Olivier Dauchot, S. Bottin, François Daviaud, Paul Manneville |
|---|---|
| Přispěvatelé: | Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes (SPHYNX), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'hydrodynamique (LadHyX), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), GIRARD, Dominique |
| Jazyk: | angličtina |
| Rok vydání: | 1998 |
| Předmět: |
Physics
[PHYS]Physics [physics] Range (particle radiation) Plane (geometry) Turbulence General Physics and Astronomy Reynolds number Mechanics 01 natural sciences [PHYS] Physics [physics] 010305 fluids & plasmas law.invention Physics::Fluid Dynamics symbols.namesake Classical mechanics Discontinuous transition Exponential growth law Intermittency 0103 physical sciences symbols 010306 general physics Couette flow |
| Zdroj: | EPL-Europhysics Letters EPL-Europhysics Letters, 1998 EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 1998 |
| ISSN: | 0295-5075 1286-4854 |
| Popis: | International audience; The plane Couette flow undergoes a globally sub-critical transition to turbulence. Turbulent spots generated by localized finite-amplitude perturbations evolve differently depending on the Reynolds number R. Below Ru sime 312 they decay rapidly; above Rc sime 323 a fraction of spots turns to sustained turbulent patches and an average turbulent fraction can be defined, that slowly increases with R. Lifetime histograms of patches quenched in the range Rin[Ru,Rc] display a well-defined exponentially decreasing tail. This behavior is reminiscent of the discontinuous transition to spatiotemporal chaos via spatiotemporal intermittency observed in certain two-dimensional lattices of coupled map. |
| Databáze: | OpenAIRE |
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