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SUMMARY:Stories of vortices that do not fly away
DTSTART:20171017T121500
DTSTAMP:20260917T070532Z
UID:6bc07f422b7104849cfd702894a47b6943314a88cd5841e8f404c719
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Ignazio Maria Viola\, Institute for Energy Systems of the 
 School of Engineering\, University of Edinburgh\nThis talk will present th
 e stories of two special vortices that improve the performances of the bod
 y that formed them. The first one\, is the vortex of the dandelion fruit\,
  which - optimised by natural evolution - exploits the vortex to maximise 
 its dispersal. The dandelion fruit that\, despite all our efforts\, grows 
 in our garden\, might have flew more than 150 km before landing there.  \
 n\nThe second of these vortices is the one of asymmetric spinnakers\, a ve
 ry efficient yacht sail. Optimised by experienced craftsmen who are unawar
 e of the ingenuous fluid mechanics of their creations\, these sails promot
 e the formation and stability of a vortex that enhances the yacht thrust. 
 These sails are unique wings with a very small thickness\, which makes the
 m more similar to the wings of small birds and insects than man-made aeron
 autical wings. It will be shown that these two vortices have a common char
 acteristic\, which is rare between vortices: they remain stably in the sam
 e position with respect to the body that formed them\, without convecting 
 downstream with the flow.\n\nBio: Dr Ignazio Maria Viola is Senior Lecture
 r (Associate Professor) at the Institute for Energy Systems of the School 
 of Engineering\, University of Edinburgh. His research is in applied fluid
  dynamics\, and focuses on the vortical flow of immersed bodies\, and how 
 these vortices can be manipulated by fluid-structure interaction. He has m
 ore than 15 years in sail aerodynamics and has collaborated with 4 America
 ’s Cup teams. More on his research can be found at www.ignazioviola.com.
LOCATION:MED 0 1418 https://plan.epfl.ch/theme/generalite_thm_plan_public?
 room=MED01418&dim_floor=0&lang=fr&dim_lang=fr&baselayer_ref=grp_background
 s&tree_groups=centres_nevralgiques%2Cacces%2Cmobilite_reduite%2Censeigne
STATUS:CONFIRMED
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