CUED Publications database

Acoustic optimization of ultra-low count bypass outlet guide vanes

Giacché, D and Hynes, T and Baralon, S and Coupland, J and Humphreys, N and Schwaller, P (2013) Acoustic optimization of ultra-low count bypass outlet guide vanes. 19th AIAA/CEAS Aeroacoustics Conference. 277-.

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An optimization process has been used to design an ultra-low count fan outlet guide vane with an unconventional leading edge profile to reduce the interaction noise. Computational fluid dynamics has been used to predict the aerodynamic and acoustic performance of the stator vane. The final stator design has been built and tested in a representative fan stage rig to determine its tone noise characteristics. The stator vane is found to give significant tone noise reduction at the fundamental blade passing frequency at cut-back in line with design expectations. Detailed comparisons of predicted circumferential and radial modes levels against measured mode detection data are also presented. A good agreement was found between numerical predictions and experimental data.

Item Type: Article
Divisions: Div A > Turbomachinery
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:13
Last Modified: 27 Jul 2017 05:25