Vortical Gust Boundary Condition for Realistic Rotor Wake/Stator Interaction Noise Prediction Using Computational Aeroacoustics
In this work, the NASA Glenn Research Center Broadband Aeroacoustic Stator Simulation (BASS) code is extended for use in the prediction of noise produced by realistic three-dimensional rotor wakes impinging on a downstream stator row. In order to accurately simulate such a flow using a nonlinear time-accurate solver, the inflow and outflow boundary conditions must simultaneously maintain the desired mean flow, allow outgoing vortical, entropic, and acoustic waves to cleanly exit the domain, and accurately impose the desired incoming flow disturbances. This work validates a new method for the acoustics-free imposition of three-dimensional vortical disturbances using benchmark test cases. Vortical gust boundary condition for realistic rotor wake/stator interaction noise prediction using computational aeroacoustics - ResearchGate. Available from: http://www.researchgate.net/publication/229362013_Vortical_gust_boundary_condition_for_realistic_rotor_wakestator_interaction_noise_prediction_using_computational_aeroacoustics [accessed Apr 20, 2015].
Journal of Sound and Vibration
Hixon, Ray; Sescu, Adrian; and Sawyer, Scott, "Vortical Gust Boundary Condition for Realistic Rotor Wake/Stator Interaction Noise Prediction Using Computational Aeroacoustics" (2011). Mechanical Engineering Faculty Research. 842.