Homogeneous stratified grid generated turbulence
(thesis O. Praud)
Photo (click to enlarge):
Front view
Energy decay:
With stratification and no rotation the energy decay law is found
the same as for ordinary isotropic turbulence.
With rotation the decay is inhibited.
stratification N=0.26 s-1
Movies ( U=0.5 cm/s)
(vertical vorticity obtained from CIV in a volume 60 cm thick scanned with 64 layers)
|
Without rotation (N=0.52s-1):
8.03 Mb |
With
rotation:
(period 40s, N=0.26 s-1)
9.37 Mb |
