Application of new one-equation turbulence model to computations of separated flows

Turbulence modeling for RANS equations has been a very slowly developing subject, and there have been limited breakthroughs in one- and two-equation turbulence models for the accurate prediction of non-equilibrium complex flows with separation, rough walls, rotation and curvature. Consequently, the suppression of the turbulent viscosity in near-wall regions becomes a function of the flow and not of the wall distance defined by the geometry. This removes any complexity in defining the wall distance in the presence of multiple surfaces and improves results compared to the empirical approach of modeling wall blocking. The quantities of interest for this case are the skin friction coefficient along the plate and the wall velocity profile. The skin friction coefficient is of particular interest because it is a difficult quantity to predict.