Turbulence modeling in rotating and curved channels - Assessment of the Spalart-Shur correction term

A unified approach, proposed to account for system rotation and streamline-curvature effects in the framework of simple eddy-viscosity turbulence models, is exercised in a wide range of rotating and curved channel flows. The Spalart-Allmaras (SA) one-equation turbulence model modified with the use of this approach is shown to be quite competitive with advanced non-linear and Reynolds-stress models, and much more accurate than the original SA model and other eddy viscosity models currently widely used for industrial flow computations.