Verification and Validation of a Second-Moment-Closure Model

The implementation of the combined Speziale–Sarkar–Gatski/Launder–Reece–Rodi differential Reynolds-stress model into different flow solvers is verified by studying the grid convergence of test cases from the Turbulence Modeling Resource Web site. The model’s predictive capabilities are also assessed based on four basic and three extended validation cases, involving attached and separated boundary-layer flows, effects of streamline curvature, and secondary flow. Simulation results are compared against experimental data and predictions by the eddy-viscosity models of Spalart–Allmaras and Menter’s shear-stress transport.