Coherent hydrodynamic structures and vortex dynamics

Possible approaches to modeling 2D coherent hydrodynamic structures are considered on the basis of statistical mechanics of local vortices. Exact definitions of coherence of structures are given and shown mechanisms of their formation. The bases of the kinetic theory of Onsager vortices are given and opportunity is lit applications "classical” molecular–kinetic theory for an explanation of emergence of vortex mesostructures in the shear layers.