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SUMMARY:Dynamics of turbulence in a jet and the effect of swirl
DTSTART:20110516T110000
DTSTAMP:20260919T215331Z
UID:3eb99d972daa0ed7ed07f7ad37c51c6b73ea3933c6237402812d96dd
CATEGORIES:Conferences - Seminars
DESCRIPTION:Samuel Davoust\, ONERA\, France\nJets represent an important c
 lass of turbulent flows with wide applications\, from \naircraft propulsio
 n to mixing and combustion. In the first part of this experimental \nstudy
 \, we use high-speed Particle Image Velocimetry to describe the organizati
 on and \nthe dynamics of the largest scales of turbulence near the exit of
  a high Reynolds \nnumber jet. From our observations\, we propose a scenar
 io on the interaction of m=0\, \nm=1 modes with streamwise vortices. In a 
 second part\, we focus on the changes that \noccur when moderate swirl is 
 imposed\, i.e. when a rotation component is added to \nthe jet exit veloci
 ty. We detail and interpret the evolutions in the jet’s mean flow\, \ntu
 rbulence statistics and large scale structures.
LOCATION:MEB10
STATUS:CONFIRMED
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