Large Eddy Simulation of the Interaction Between Two Distinct Turbulent Velocity Scales

A Large Eddy Simulation of a shearless turbulence mixing layer is proposed with a view to understand the transport mechanisms in a simple situation of inhomogeneous turbulence. The numerical technique is shortly presented. Results are found to be in qualitative agreement with experimental data. Special attention is paid to transport terms by triple velocity correlations and by pressure velocity correlations, in order to permit comparisons with existing models.