The Influence of Stratification and Slope in Mixing Layers

The purpose of this numerical work is focused on the dynamics of a stably stratified inclined mixing layer. Both effects, stratifi- cation and slope, are considered through relevant flow parameters. Chebyshev's approximations and Direct Numerical Simulation (DNS) are used in the context of linear stability analysis for different Richardson numbers and slopes. Two-dimensional temporal and spatial simulations are employed to examine baroclinic layer and the evolution of primary and secondary Kelvin-Helmholtz instabilities. In three-dimensional configuration, only stratification effects are considered. The numerical results show persistence of the translative instability with formation of intense longitudinal vortices highly influenced by the Richardson number.