PERFORMANCE OF POPULAR TURBULENCE MODELS FOR ATTACHED AND SEPARATED ADVERSE PRESSURE-GRADIENT FLOWS

The performance of four popular eddy-viscosity turbulence models under adverse pressure gradient conditions is investigated. The Baldwin-Lomax, Johnson-King, Baldwin-Barth, and Wilcox k-omega models have been implemented into the INS code, which solves the incompressible Reynolds-averaged Navier-Stokes equations. Results will be shown for the well-known Samuel-Joubert flow and two new flowfields, recently reported by D. M. Driver. The two new flowfields pose a stronger test of the models than does the Samuel-Joubert flow because of the more severe retardation of the boundary layer, including separation in one case. A detailed comparison of the numerical results and the experimental data will be shown.