Assessment of turbulence models for a wing-in-junction flow

The numerous engineering applications involving wingin� junctionflows makes knowledge of the predictive ef fectiveness of turbulence models for such flows valuable. The performance of eight turbulence models was assessed for a winginjunction flow test case using incompressible Reynoldsaverag ed Navier� Stokes (RANS) simulations. The case geometry consisted of an airfoil with a 3:2 elliptical leading edge, attached at the point of maximum thickness to a NACA 0020 series tail, mounted on a flat plate. The numerical results for pressure, velocity and turbulent kinetic energy achieved using the various turbulence models were evaluated by comparison with experimental measurements published in the literature. It was found that the Realisable k�e model, and secondmoment closure models, produced the closest agreement to the experimental data.