Prediction of Noise from Realistic Rotor-Wake/Stator-Row Interaction Using Computational Aeroacoustics

Progress towards the computational prediction of the turbulent flow and broadband noise generated due to the interaction of rotor wakes and stator blades is presented. An inflow boundary treatment is developed which allows arbitrary incoming unsteady flow disturbances to be imposed while preserving the desired mean flow and generating minimal reflections. The boundary condition was implemented in a nonlinear Euler CAA code and validated on a 2D CAA benchmark problem. Preliminary results are shown for a loaded 2D cascade with realistic stator wakes specified from experimental data. I