Numerical simulation of a 3-D laminar wing in transonic regime

Abstract

The present paper details the simulations carried out for the 3D-V2C wing configuration designed by Dassault Aviation in the context of the TFAST—Transition location effect on shock boundary layer interaction—European programme. The results concern the constant section wing and the swept one. In the second case, the transition location is imposed by numerical tripping of the eddy-viscosity to examine the impact of its location on the buffet’s onset. The computations have been carried out by using URANS, OES and hybrid approaches. The results analyse the transonic buffet dynamics by means of spectral and POD analysis in case of the constant section wing. They also examine onset of unsteadiness at 5° and 7° of incidence for the swept wing. Because of the chord’s length variation, there are sections where the local Reynolds number is subcritical or supercritical regarding the buffet instability.