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SUMMARY:Some transient studies in stratified flow with horizontal shear - 
 Cristobal Arratia\, LadHyX\, Ecole Polytechnique\, Palaiseau
DTSTART:20080925T094500Z
DTEND:20080925T104500Z
UID:TALK13773@talks.cam.ac.uk
CONTACT:Dr C. P.  Caulfield
DESCRIPTION:We study the linear transient growth of optimal perturbations 
 in a horizontally dependent mixing layer-type velocity profile with vertic
 al stratification. Early results show that the perturbations that optimall
 y amplify energy present the biggest amplification for 2D perturbations\, 
 which is in agreement with modal theory. However\, some characteristics of
  these perturbations (i.e. enstrophy) are more amplified for 3D perturbati
 ons with a certain vertical wavelength. This might be of interest in relat
 ion with the spontaneous layering observed in many stratified flows that a
 re initially uniform in the vertical direction.
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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