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SUMMARY:Temperature front formation in stably stratified turbulence - Yosh
 ifumi Kimura (Nagoya University)
DTSTART:20240516T150000Z
DTEND:20240516T160000Z
UID:TALK216925@talks.cam.ac.uk
DESCRIPTION:Through interactions between the modes of "waves" and "vortice
 s"\, stably stratified turbulence exhibits characteristic features both in
  2D and 3D. Using DNS of the Navier-Stokes equations under the Boussinesq 
 approximation\, we investigate dynamical properties of stably stratified t
 urbulence in relation with the mixed dimensionality.&nbsp\;Also it is demo
 nstrated that the temperature fluctuations make sharp fronts vertically wh
 ich show sawtooth wave structures. Such sawtooth or cliff-ramp&nbsp\;struc
 tures result in non-symmetric PDFs of the vertical derivative of temperatu
 re fluctuations. The reason for the mechanism of asymmetry will be conside
 red. &nbsp\;&nbsp\;
LOCATION:Seminar Room 2\, Newton Institute
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