Journal of Statistical Physics, Vol. 86, Nos. 3/4. 1997. p. 481-515.
In previous work we have defined statistical equilibrium states for 2D incompressible Et, ler equations. We study here the relaxation process toward equilibrium. This leads to a natural modeling of the small scales in turbulent flows, which might be relevant for meteorological and oceanographic applications. Numerical simulations illustrating the performance of these new models are presented.