Aeroacoustic analysis of high tip-speed rotating blades

摘要

The evaluation of the noise generated by a high tip-speed rotating blade is obtained in time domain through the Ffowcs Williams-Hawkings (FW-H) equation and a numerical procedure developed to model the so- called 'emission surface'. This procedure, named K-Algorithm, allows us to account for the contribution of the supersonic sources and has been recently improved to reduce the computational effort and to treat some advanced (rotor and propeller) configurations.