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 (2D) and three-dimensional (3D) 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 2D and 3D separated flows, as expected. In general, all models perform well for attached or mildly separated flows.
A comparison of the predictive capabilities of several turbulence models using upwind and central-difference computer codes
AIAA, Aerospace Sciences Meeting and Exhibit ; 1993 ; Reno, NV, United States
1993-01-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Comparison of the Predictive Capabilities of Several Turbulence Models
Online Contents | 1995
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