Increasing vorticity packing fraction transitions Lagrangian tracer transport from sub- to super-diffusive in decaying 2D Navier-Stokes turbulence, correlating with a shift from point-vortex to patch-vortex Eulerian equilibria.
The KH shear instability generates vortex rolls that merge through an inverse energy cascade to form large scale dipoles
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Vorticity Packing Effects on Long Time Turbulent Transport in Decaying Two-Dimensional Incompressible Navier-Stokes Fluids
Increasing vorticity packing fraction transitions Lagrangian tracer transport from sub- to super-diffusive in decaying 2D Navier-Stokes turbulence, correlating with a shift from point-vortex to patch-vortex Eulerian equilibria.