Investigation of the Unsteady Flow and Noise Generation in a Slat Cove
This study presents hybrid Reynolds averaged Navier Stokes/large eddy simulations of the unsteady flow and noise generation phenomena in the slat cove of a high lift wing profile. These computations are part of a joint numerical/experimental aeroacoustics collaborative program dedicated to slat flow analysis. A dedicated two element wing profile (slat plus main body) has been designed to isolate slat noise from other possible sources (e.g. the flap) while minimizing mean flow deflection effects, to improve the fidelity of open jet wind tunnel measurements. The design of this two element airfoil has been performed numerically, using an optimization process based on steady Reynolds averaged Navier Stokes calculations. This airfoil has been investigated experimentally at the Ecole Centrale de Lyon open jet facility. Unsteady zonal hybrid Reynolds averaged Navier Stokes/large eddy simulations have been performed to provide a comprehensive description of the unsteady flow inside the slat cove, focusing on th.