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SUMMARY:Oblique coherent structures in plane Couette flow - Conor Daly (DA
 MTP)
DTSTART:20140221T153100Z
DTEND:20140221T154100Z
UID:TALK51082@talks.cam.ac.uk
CONTACT:Dr C. P.  Caulfield
DESCRIPTION:It is conjectured that exact coherent structures\, finite-ampl
 itude solutions to the Navier-Stokes equations\, are key components to an 
 understanding of turbulent dynamics. Exact coherent structures can form an
  invariant set about which chaos is supported\, and it is thought that tur
 bulence related phenomena are a manifestation of these chaotic dynamics. B
 y continuation of tertiary states from supercritical\, spanwise rotating p
 lane Couette flow\, we find obliquely oriented structures which persist in
  subcritical plane Couette flow. The structures emerge in a saddle-node bi
 furcation in plane Couette flow\, similar to previously found coherent str
 uctures in the subcritical shear flows. We discuss the symmetry properties
  of our coherent structures\, and investigate their relevance to oblique t
 urbulent phenomena such as turbulent stripes.
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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