Thermalization and free decay in Surface Quasi-Geostrophic flows

Details Thermalization and free decay in Surface Quasi-Geostrophic flows Thermalization and free decay in Surface Quasi-Geostrophic flows

2011-10-08

arxiv.org/abs/1110.1763v3

Physics

Fluid Dynamics

Scientific paper

We derive statistical equilibrium solutions of the truncated inviscid surface quasi-geostrophic (SQG) equations, and verify the validity of these solutions at late times in numerical simulations of the truncated SQG equations. The results indicate enstrophy thermalizes while energy can condense at the gravest modes, in agreement with previous indications of a direct cascade of enstrophy and an inverse cascade of energy in forced-dissipative SQG systems. At early times, the truncated inviscid SQG simulations show a behavior reminiscent of forced-dissipative SQG turbulence, and we identify spectral scaling laws for the energy and enstrophy spectra. Finally, a comparison between viscous and inviscid simulations allows us to identify free-decay similarity laws for the enstrophy in SQG turbulence at very large Reynolds number.

Affiliated with

Also associated with

No associations

Rating

Thermalization and free decay in Surface Quasi-Geostrophic flows does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermalization and free decay in Surface Quasi-Geostrophic flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermalization and free decay in Surface Quasi-Geostrophic flows will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-497845