On the numerical investigation of the tip leakage noise sources of a stationary aerofoil
On the numerical investigation of the tip leakage noise sources of a stationary aerofoil
Among the various noise sources related to duct fans, the noise generated by the interaction of the tip leakage flow with the blade geometric singularities is one of the least understood noise sources. Our past experimental investigations on a stationary aerofoil have highlighted two tip noise sources, localised at the mid-chord and at 75\% of the chord, which have been linked to the separation of the flow at the pressure side tip edge of the aerofoil. This paper aims at numerically visualise the fluid dynamic instabilities responsible for these noise sources. Furthermore, it examines how these instabilities change when we round the pressure side tip, as this modification leads to a notable 8 dB decrease in the tip noise.
American Institute of Aeronautics and Astronautics
Saraceno, Ivan
9c74b5c9-b834-43cc-b26d-9408b0534304
Paruchuri, Chaitanya
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Ganapathisubramani, Bharath
5e69099f-2f39-4fdd-8a85-3ac906827052
Alguacil, Antonio
67c5356a-a458-4324-a569-b4f039187b7d
Moreau, Stephane
f9fde9a7-e1d3-4510-ab40-8aaf48610662
Sanjose, Marlene
d0ea5801-cc94-484b-b22d-799c6445705e
30 May 2024
Saraceno, Ivan
9c74b5c9-b834-43cc-b26d-9408b0534304
Paruchuri, Chaitanya
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Ganapathisubramani, Bharath
5e69099f-2f39-4fdd-8a85-3ac906827052
Alguacil, Antonio
67c5356a-a458-4324-a569-b4f039187b7d
Moreau, Stephane
f9fde9a7-e1d3-4510-ab40-8aaf48610662
Sanjose, Marlene
d0ea5801-cc94-484b-b22d-799c6445705e
Saraceno, Ivan, Paruchuri, Chaitanya, Ganapathisubramani, Bharath, Alguacil, Antonio, Moreau, Stephane and Sanjose, Marlene
(2024)
On the numerical investigation of the tip leakage noise sources of a stationary aerofoil.
In 30th AIAA/CEAS Aeroacoustics Conference, 2024.
vol. 30,
American Institute of Aeronautics and Astronautics..
(doi:10.2514/6.2024-3116).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Among the various noise sources related to duct fans, the noise generated by the interaction of the tip leakage flow with the blade geometric singularities is one of the least understood noise sources. Our past experimental investigations on a stationary aerofoil have highlighted two tip noise sources, localised at the mid-chord and at 75\% of the chord, which have been linked to the separation of the flow at the pressure side tip edge of the aerofoil. This paper aims at numerically visualise the fluid dynamic instabilities responsible for these noise sources. Furthermore, it examines how these instabilities change when we round the pressure side tip, as this modification leads to a notable 8 dB decrease in the tip noise.
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Published date: 30 May 2024
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© 2024, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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Local EPrints ID: 497161
URI: http://eprints.soton.ac.uk/id/eprint/497161
PURE UUID: 531a9851-e885-48f9-bca7-773389a4e3e6
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Date deposited: 15 Jan 2025 17:39
Last modified: 11 Sep 2025 03:18
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Author:
Ivan Saraceno
Author:
Antonio Alguacil
Author:
Stephane Moreau
Author:
Marlene Sanjose
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