VALIDATION OF A K-EPSILON MODEL BASED ON EXPERIMENTAL RESULTS IN A THERMALLY STABLE STRATIFIED TURBULENT BOUNDARY-LAYER

A 2D (k-epsilon) turbulence model was developed for use with dilatable flows at high Reynolds numbers. A new approach relative to the modelling of the density-velocity correlation term is proposed, and a relation concerning the Prandtl turbulent number was used taking into account both the wall and gravity effects. This model was validated by experimental results obtained at the E.C.L. Fluid Mechanics and Acoustics laboratory on a stable thermally stratified turbulent boundary layer developing at a quickly cooled smooth boundary surface.