Aiaa 93–0192 a Comparison of the Predictive Capabilities of Several Turbulence Models Using Upwind and Central-difference Computer Codes

Four turbulence models are described and evaluated for transonic flows using the upwind code CFL3D and the central-difference code TLNS3D. In particular, the effects of recent modifications to the half-equation model of Johnson-King are explored in detail, and different versions of the model are compared. This model can obtain good results for both two-dimensional (2–D) and three-dimensional (3–D) separated flows. The one-equation models of Baldwin-Barth and Spalart-Allmaras perform well for separated airfoil flows, but can predict the shock too far forward at the outboard stations of a separated wing. The equilibrium model of Baldwin-Lomax predicts the shock location too far aft for both 2–D and 3–D separated flows, as expected. In general, all models perform well for attached or mildly separated flows.