Separated flow treatment with a new turbulence model

The separation bubble formed in many flow fields in regions where the flow detaches from a solid surface and reattaches further downstream is addressed by a rigorous turbulence model using a k-epsilon formulation. In the model, which is based on experimental observations, turbulent kinetic energy within the backflow region is a Gaussian function of the distance from the wall. The length scale of turbulence within the bubble is proportional to the local distance from the wall to the edge of the viscous sublayer located outside the backflow region.