caa a22 4500 445391863 CHVBK 20180317143049.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10955-011-0126-x doi (NATIONALLICENCE)springer-10.1007/s10955-011-0126-x Pattern Fluctuations in Transitional Plane Couette Flow [Elektronische Daten] [Joran Rolland, Paul Manneville] In wide enough systems, plane Couette flow, the flow established between two parallel plates translating in opposite directions, displays alternatively turbulent and laminar oblique bands in a given range of Reynolds numbers R. We show that in periodic domains that contain a few bands, for given values of R and size, the orientation and the wavelength of this pattern can fluctuate in time. Aprocedure is defined to detect well-oriented episodes and to determine the statistics of their lifetimes. The latter turn out to be distributed according to exponentially decreasing laws. This statistics is interpreted in terms of an activated process described by a Langevin equation whose deterministic part is a standard Landau model for two interacting complex amplitudes whereas the noise arises from the turbulent background. Springer Science+Business Media, LLC, 2011 Fluid dynamics nationallicence Turbulence nationallicence Pattern formation nationallicence Jump process nationallicence Rolland Joran Laboratoire d'Hydrodynamique de l'École Polytechnique, 91128, Palaiseau, France aut Manneville Paul Laboratoire d'Hydrodynamique de l'École Polytechnique, 91128, Palaiseau, France aut Journal of Statistical Physics Springer US; http://www.springer-ny.com 142/3(2011-02-01), 577-591 0022-4715 142:3<577 2011 142 10955 https://doi.org/10.1007/s10955-011-0126-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10955-011-0126-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rolland Joran Laboratoire d'Hydrodynamique de l'École Polytechnique, 91128, Palaiseau, France aut NATIONALLICENCE 700 1- Manneville Paul Laboratoire d'Hydrodynamique de l'École Polytechnique, 91128, Palaiseau, France aut NATIONALLICENCE 773 0- Journal of Statistical Physics Springer US; http://www.springer-ny.com 142/3(2011-02-01), 577-591 0022-4715 142:3<577 2011 142 10955 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer