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SUMMARY:Dynamical characterization of large scale structures in channel fl
 ow turbulence - Toh\, S (Kyoto)
DTSTART:20080910T145000Z
DTEND:20080910T151000Z
UID:TALK13363@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We obtained unstable periodic solutions up to at Re=6000 and t
 ravelling wave solution up to at Re=12\,000 of streamwise-minimal channel 
 flow by he shooting method. These solutions are on the basin boundary of t
 he turbulent attractor and have characteristics of large scale motions obs
 erved in ully-developed channel flow turbulence. We show that these unstab
 le solutions well describe the temporal evolution of the large scale motio
 n embeded in turbulence that is defined by the local minima of streamwise 
 velocity averaged over the streamwise direction.
LOCATION:Seminar Room 1\, Newton Institute
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