Abstract
We use Kullback entropy for Young measures to define statistical equilibrium states for a two-dimensional incompressible flow of a perfect fluid. This approach is justified, as it gives a concentration property about the equilibrium state in the phase space. It might give a statistical understanding of the appearance of coherent structures in two-dimensional turbulence.
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Robert, R. A maximum-entropy principle for two-dimensional perfect fluid dynamics. J Stat Phys 65, 531–553 (1991). https://doi.org/10.1007/BF01053743
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DOI: https://doi.org/10.1007/BF01053743