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CATEGORIES:DAMTP BioLunch
SUMMARY:Chaotic tumbling and steady drifting of bananas in
  shear flow - Ian Thorp (University of Cambridge)
DTSTART;TZID=Europe/London:20181025T130000
DTEND;TZID=Europe/London:20181025T140000
UID:TALK112936AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/112936
DESCRIPTION:The motion of an axisymmetric ellipsoid immersed i
 n a shear flow at zero Reynolds number is simple: 
 the ellipsoid rotates periodically and is advected
  downstream by the fluid. However\, bending the el
 lipsoid into a banana shape radically changes both
  its rotational and translational dynamics. The ro
 tation becomes quasiperiodic or chaotic and partic
 les can drift steadily across the streamlines in t
 he gradient and/or the vorticity directions of the
  shear flow. I shall explain the origins of drift 
 and the changes in rotational dynamics in terms of
  the symmetry group of the particle (shared by T-s
 hapes and square pyramids) and the reversibility o
 f Stokes flow\, which establish a connection to KA
 M theory.\n
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberfo
 rce Road\, Cambridge
CONTACT:Anne Herrmann
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