Investigation of Turbulence Models for the Supersonic Transport Configuration at Low-Speed and High Alpha Flight Condition

A numerical study on a supersonic transport at low speed and high alpha condition has been performed using Reynolds-Averaged Navier-Stokes equations. The aerodynamic performance is strongly influenced by the separated vortices formed over the wing. In this vortex dominant flow field, the characteristics of several turbulence models (SA, SA-RC, EARSM) were investigated in comparison with the experimental results. The vortex behaviors strongly depended on the turbulence models. These tendencies were clearly observed at the leading edge flaps and at the tail plane. It was found that the Cm of the tail plane is strongly influenced by the strake vortex. On the tail plane flow field, the numerical result by the SA-RC shows good agreement with the experimental result.