@inproceedings{f2017e60f781431caaf64ceb0b0e22d1,
title = "Generation and propagation of {"}buzz-saw{"} noise in transonic fan with blade vibrations",
abstract = "When compared with the ideal rotor, {"}buzz-saw{"} noise radiated by real transonic fan is different because of blade variations. Apart from the initial blade irregularities, additional unsteady blade variations are introduced by blade vibration. The influence of blade vibration on the generation and propagation of {"}buzz-saw{"} noise is still not clear. NASA rotor 67 is selected to investigate the effect of blade vibration on the generation and propagation of {"}buzz-saw{"} noise. The blade eigenfrequency and the maximum displacement are obtained from flow/structure interaction data. By applying the fast reconstruction method proposed by the authors, these data are used to generate the unsteady rotor-alone pressure fields of vibrating rotors. Then, the pressure fields are transformed to saw-tooth waves and marched upstream by analytical method. Comparisons are performed among the non-vibrating and vibrating versions of the ideal rotor and the rotor with initial stagger variations. Blade vibration increases the sound pressure level of the sub-harmonics, which forms a narrow-band peak near half the blade passing frequency. These sub-harmonics behave differently with the blade passing frequency and its harmonics during the propagation.",
keywords = "Analytical method, Blade vibration, Buzz-saw noise, Source fast reconstruction",
author = "Xiaolong Tang and Xiaodong Li",
note = "Publisher Copyright: {\textcopyright} {"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. All rights reserved.; 27th International Congress on Sound and Vibration, ICSV 2021 ; Conference date: 11-07-2021 Through 16-07-2021",
year = "2021",
language = "英语",
series = "{"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021",
publisher = "Silesian University Press",
editor = "Eleonora Carletti and Malcolm Crocker and Marek Pawelczyk and Jiri Tuma",
booktitle = "{"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021",
}