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SUMMARY:Life as plankton: When fluid mechanics really matters  - Prof. Chr
 istophe Eloy\, IRPHE Marseille
DTSTART:20230209T123000Z
DTEND:20230209T133000Z
UID:TALK191411@talks.cam.ac.uk
CONTACT:Raymond E. Goldstein
DESCRIPTION:By definition\, planktonic organisms drift with the water flow
 s. But these millimetric organisms are not necessarily passive\; many can 
 swim and can sense the surrounding flow through mechanosensory hairs. But 
 how useful can be flow sensing in a turbulent environment? To address this
  question\, we show two examples of smart planktonic behavior: (1) we deve
 lop a model where plantkters choose a swimming direction as a function of 
 the velocity gradient to "surf on turbulence" and move efficiently upwards
 \; (2) we show how a plankter measuring the velocity gradient may track th
 e position of a swimming target from its hydrodynamic signature. 
LOCATION:MR15\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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