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The implementation of the combined Speziale-Sarkar-Gatski/Launder-Reece-Rodi differential Reynolds stress model into different flow solvers verified by studying the grid convergence of test cases from the Turbulence Modeling Resource Website. 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. results are compared against experimental data and predictions the eddy-viscosity models of Spalart-Allmaras and Menter's Shear Stress Transport.
Eisfeld et al. (2016) studied this question.