Reduction of turbulence-aerofoil interaction noise by the use of Kevlar-covered air gaps
Reduction of turbulence-aerofoil interaction noise by the use of Kevlar-covered air gaps
This work is a fundamental experimental investigation on reducing the noise caused by the interaction of a turbulent stream with an aerofoil by using a Kevlar section downstream of the aerofoil leading edge. It has been shown previously by the authors that the noise radiated by two flat plates in a tandem configuration in a turbulent flow is significantly reduced at low frequencies relative to a baseline aerofoil. One of the mechanisms of such noise reductions is attributed to an effective shortening of the chord which leads to generally weaker radiation. Additional noise is however generated at higher frequencies caused by the interaction of the wake shed from the upstream plate impinging onto the leading edge of the downstream plate. The current work proposes to bridge the air gap between the two flat-plate aerofoil sections with Kevlar fabric. It is shown that this technology is capable of suppressing the additional noise penalty while still providing significant levels of noise reduction both in flat plates and thin aerofoil geometries representative of outlet guide vanes in aero-engine applications.
tandem configurations, Turbulence-aerofoil interaction noise
Palleja-Cabre, Sergi
b841a96c-05d1-4f08-a197-8693cb3a3f90
Chaitanya, Paruchuri
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Joseph, Phillip
9c30491e-8464-4c9a-8723-2abc62bdf75d
9 July 2023
Palleja-Cabre, Sergi
b841a96c-05d1-4f08-a197-8693cb3a3f90
Chaitanya, Paruchuri
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Joseph, Phillip
9c30491e-8464-4c9a-8723-2abc62bdf75d
Palleja-Cabre, Sergi, Chaitanya, Paruchuri and Joseph, Phillip
(2023)
Reduction of turbulence-aerofoil interaction noise by the use of Kevlar-covered air gaps.
Carletti, Eleonora
(ed.)
In Proceedings of the 29th International Congress on Sound and Vibration, ICSV 2023.
IIAV Czech s.r.o.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
This work is a fundamental experimental investigation on reducing the noise caused by the interaction of a turbulent stream with an aerofoil by using a Kevlar section downstream of the aerofoil leading edge. It has been shown previously by the authors that the noise radiated by two flat plates in a tandem configuration in a turbulent flow is significantly reduced at low frequencies relative to a baseline aerofoil. One of the mechanisms of such noise reductions is attributed to an effective shortening of the chord which leads to generally weaker radiation. Additional noise is however generated at higher frequencies caused by the interaction of the wake shed from the upstream plate impinging onto the leading edge of the downstream plate. The current work proposes to bridge the air gap between the two flat-plate aerofoil sections with Kevlar fabric. It is shown that this technology is capable of suppressing the additional noise penalty while still providing significant levels of noise reduction both in flat plates and thin aerofoil geometries representative of outlet guide vanes in aero-engine applications.
Text
SPallejaCabre_ICSV_2023
- Accepted Manuscript
More information
e-pub ahead of print date: 9 July 2023
Published date: 9 July 2023
Venue - Dates:
29th International Congress on Sound and Vibration, ICSV 2023, , Prague, Czech Republic, 2023-07-09 - 2023-07-13
Keywords:
tandem configurations, Turbulence-aerofoil interaction noise
Identifiers
Local EPrints ID: 483121
URI: http://eprints.soton.ac.uk/id/eprint/483121
ISSN: 2329-3675
PURE UUID: 3e59c6cf-ba65-4c6f-9b50-07535fe5d63d
Catalogue record
Date deposited: 25 Oct 2023 02:15
Last modified: 18 Mar 2024 03:42
Export record
Contributors
Editor:
Eleonora Carletti
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
