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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Invariant solutions and visualization of dynamics 
 in plane Couette flow - Gibson\, JF (Georgia Insti
 tute of Technology)
DTSTART;TZID=Europe/London:20080909T113000
DTEND;TZID=Europe/London:20080909T115000
UID:TALK13342AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/13342
DESCRIPTION:It has recently become possible to compute precise
  equilibrium\, traveling wave\, and periodic orbit
  solutions to pipe and plane Couette flow at moder
 ate Reynolds numbers. These invariant solutions ca
 pture the complex dynamics of rolls and streaks (c
 oherent structures) in wall-bounded flows and prov
 ide a framework for understanding turbulent flows 
 as dynamical systems. We present (1) a number of w
 eakly unstable equilibria\, traveling waves\, and 
 periodic orbits of plane Couette flow\, (2) visual
 izations of their physical and state-space dynamic
 s\, and (3) statistics on how frequently the solut
 ions appear within turbulent flows. What emerges i
 s a picture of moderate-Reynolds turbulence as a w
 alk among a set of weakly unstable invariant solut
 ions.
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:Mustapha Amrani
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