MODELING OF THE HOMOGENEOUS TURBULENCE DYNAMICS OF STABLY STRATIFIED MEDIA

Numerical simulation of the dynamics of homogeneous turbulence of a st ably stratified fluid in the presence of a vertical constant-density g radient was carried out. The second-order model which is universal wit h respect to turbulent Reynolds and Peclet numbers and molecular Prand tl number is applied to the numerical simulation of the dynamics of th e velocity and density field parameters up to the final stage of der-a y. At small evolution times Ntau, the results of similation are compar ed with the familiar experimental data. The structure of a 'relict' tu rbulence was investigated for the molecular Prandtl numbers correspond ing to air and sea water.