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SUMMARY:Low-order modelling of turbulent structure and statistics - Dr. At
 i Sharma\, University of Southampton
DTSTART:20170203T130000Z
DTEND:20170203T140000Z
UID:TALK70380@talks.cam.ac.uk
CONTACT:Akshath Sharma
DESCRIPTION:Recent years have seen various new approaches to low-order mod
 elling of \nturbulent fluid flows. These include the resolvent-based appro
 ach\, \nKoopman/DMD modes and recurrent solutions of the Navier-Stokes \ne
 quations. These approaches are all linked.  Recurrent solutions to the \nN
 avier-Stokes equations are widely thought to give shape to the \nstate-spa
 ce that turbulent motion inhabits. Yet\, the logarithmic layer \nhas remai
 ned resistant to a structure-based description in terms of \ninvariant sol
 utions or so-called attached eddies. The resolvent \nframework will be exp
 lained in detail\, and some modelling and scaling \nresults will be presen
 ted for predicted eddies in the log layer.
LOCATION:JDB Seminar Room\, CUED
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