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Journal Articles EPL - Europhysics Letters Year : 1998

Discontinuous transition to spatiotemporal intermittency in plane Couette flow

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Abstract

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.
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Dates and versions

cea-01378779 , version 1 (10-10-2016)

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  • HAL Id : cea-01378779 , version 1

Cite

S Bottin, François Daviaud, P. Manneville, Olivier Dauchot. Discontinuous transition to spatiotemporal intermittency in plane Couette flow. EPL - Europhysics Letters, 1998. ⟨cea-01378779⟩
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