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SUMMARY:Edge trajectories in boundary layer flows - Yohann Duguet (CNRS (C
 entre national de la recherche scientifique)\, Université Paris Saclay)
DTSTART:20220328T090000Z
DTEND:20220328T093000Z
UID:TALK171110@talks.cam.ac.uk
DESCRIPTION:&nbsp\;In this talk I will review the concept of edge state an
 d of edge trajectory\, both&nbsp\;inspired by dynamical system theories\, 
 when applied to incompressible transitional shear flows. Edge states refer
  to specific\, yet unstable flow regimes intermediate between laminar and 
 turbulent regimes\, they are found numerically in cases where transition o
 ccurs subcritically\, i.e. the turbulent state coexists with the laminar o
 ne. The nowadays classical bisection method will be recalled together with
  recent computational alternatives. Although the edge concept is well deve
 loped for parallel shear flows\, this talk will feature the latest develop
 ments in the context of spatially developing boundary layer flows\, in ter
 ms of computations\,&nbsp\; modelling and relevance to engineering configu
 rations. This is joint work with Miguel Beneitez\, Philipp Schlatter and D
 an S. Henningson.
LOCATION:Seminar Room 1\, Newton Institute
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