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Prediction of Swirl Effects on Fan-OGV Interaction Tones

Prediction of Swirl Effects on Fan-OGV Interaction Tones
Prediction of Swirl Effects on Fan-OGV Interaction Tones
Noise levels predicted for the fan-OGV interaction tones generated by modern high and ultra high bypass ratio aircraft engines are significantly changed when swirl in the interstage region is included in the modelling. An analytical prediction method is used to predict interstage interaction tonal noise levels for an annular duct with uniform flow or swirling flow. It is predicted that swirl effects alter the range of modes that are cut-on, and their corresponding sound power levels in the upstream direction. Results confirm that the inclusion of swirl effects in the modelling of fan-OGV interaction tones is important to improve the prediction of the sound power levels of the upstream propagating modes.
AIAA 2022-2942
Adetifa, Oluwaseun E
1cd33496-2a0b-47af-93ca-d4407b8a63c0
Mcalpine, Alan
aaf9e771-153d-4100-9e84-de4b14466ed7
Namgoong, Howoong
ad304c04-8cb4-4976-a765-ad7f47ad8b96
Adetifa, Oluwaseun E
1cd33496-2a0b-47af-93ca-d4407b8a63c0
Mcalpine, Alan
aaf9e771-153d-4100-9e84-de4b14466ed7
Namgoong, Howoong
ad304c04-8cb4-4976-a765-ad7f47ad8b96

Adetifa, Oluwaseun E, Mcalpine, Alan and Namgoong, Howoong (2022) Prediction of Swirl Effects on Fan-OGV Interaction Tones. Proceedings of the 28th AIAA/CEAS Aeroacoustics Conference, Southampton, UK, , Southampton, United Kingdom. 14 - 17 Jun 2022. AIAA 2022-2942 . (doi:10.2514/6.2022-2942).

Record type: Conference or Workshop Item (Paper)

Abstract

Noise levels predicted for the fan-OGV interaction tones generated by modern high and ultra high bypass ratio aircraft engines are significantly changed when swirl in the interstage region is included in the modelling. An analytical prediction method is used to predict interstage interaction tonal noise levels for an annular duct with uniform flow or swirling flow. It is predicted that swirl effects alter the range of modes that are cut-on, and their corresponding sound power levels in the upstream direction. Results confirm that the inclusion of swirl effects in the modelling of fan-OGV interaction tones is important to improve the prediction of the sound power levels of the upstream propagating modes.

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Published date: 13 June 2022
Additional Information: Funding Information: The research was funded by Rolls–Royce plc and Innovate UK in the ACAPELLA and FANTASIA projects. The Publisher Copyright: © 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
Venue - Dates: Proceedings of the 28th AIAA/CEAS Aeroacoustics Conference, Southampton, UK, , Southampton, United Kingdom, 2022-06-14 - 2022-06-17

Identifiers

Local EPrints ID: 469593
URI: http://eprints.soton.ac.uk/id/eprint/469593
PURE UUID: 1cf35026-04c5-4e87-acb4-28cf84058ba9
ORCID for Alan Mcalpine: ORCID iD orcid.org/0000-0003-4189-2167

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Date deposited: 20 Sep 2022 17:13
Last modified: 21 Sep 2022 01:36

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Contributors

Author: Oluwaseun E Adetifa
Author: Alan Mcalpine ORCID iD
Author: Howoong Namgoong

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