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SUMMARY:Hollow vortices - Stefan Llewellyn Smith (UCSD)
DTSTART:20111202T160000Z
DTEND:20111202T170000Z
UID:TALK33046@talks.cam.ac.uk
CONTACT:Dr Ed Brambley
DESCRIPTION:Hollow vortices are vortices whose interior is at rest.  They 
 posses vortex sheets on their boundaries and can be viewed as a desingular
 ization of point vortices.  We give a brief history of point vortices.  We
  then obtain exact solutions for hollow vortices in linear and nonlinear s
 train and examine the properties of streets of hollow vortices.  The forme
 r can be viewed as a canonical example of a hollow vortex in an arbitrary 
 flow\, and its stability properties depend.  In the latter case\, we reexa
 mine the hollow vortex street of Baker\, Saffman and Sheffield and examine
  its stability to arbitrary disturbances\, and then investigate the double
  hollow vortex street. Implications and extensions of this work are discus
 sed.\n
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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