Turbulence-cascade interaction noise using an advanced digital filter method
Turbulence-cascade interaction noise using an advanced digital filter method
Fan wakes interacting with outlet guide vanes is a major source of noise in modern turbofan engines. In order to study this source of noise, the current work presents two-dimensional simulations of turbulence-cascade interaction noise using a computational aeroacoustic methodology. An advanced digital filter method is used for the generation of isotropic synthetic turbulence in a linearised Euler equation solver. A parameter study is presented to assess the influence of airfoil thickness, mean flow Mach number, stagger angle and gap-to-chord ratio on noise. Results are validated against predictions from an analytical method for two-dimensional flat plate cascades. Fan wake modelling is also addressed by extending the advanced digital filter method to account for spatial variations of the turbulence intensity
Gea Aguilera, Fernando
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Gill, James
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Zhang, Xin
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Nodé-Langlois, Thomas
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11 July 2016
Gea Aguilera, Fernando
8aaa69d6-7618-4b2e-9942-e1ab4084aba4
Gill, James
1e31eb24-f833-462e-b610-23b5b28e7285
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Nodé-Langlois, Thomas
e0110d6a-9623-4e58-b27d-78d4a49f1743
Gea Aguilera, Fernando, Gill, James, Zhang, Xin and Nodé-Langlois, Thomas
(2016)
Turbulence-cascade interaction noise using an advanced digital filter method.
23rd International Congress on Sound & Vibration, , Athens, Greece.
10 - 14 Jul 2016.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Fan wakes interacting with outlet guide vanes is a major source of noise in modern turbofan engines. In order to study this source of noise, the current work presents two-dimensional simulations of turbulence-cascade interaction noise using a computational aeroacoustic methodology. An advanced digital filter method is used for the generation of isotropic synthetic turbulence in a linearised Euler equation solver. A parameter study is presented to assess the influence of airfoil thickness, mean flow Mach number, stagger angle and gap-to-chord ratio on noise. Results are validated against predictions from an analytical method for two-dimensional flat plate cascades. Fan wake modelling is also addressed by extending the advanced digital filter method to account for spatial variations of the turbulence intensity
Text
ICSV23_full_paper_Gea-Aguilera_Final.pdf
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More information
Accepted/In Press date: 28 February 2016
Published date: 11 July 2016
Venue - Dates:
23rd International Congress on Sound & Vibration, , Athens, Greece, 2016-07-10 - 2016-07-14
Organisations:
Aerodynamics & Flight Mechanics Group
Identifiers
Local EPrints ID: 398173
URI: http://eprints.soton.ac.uk/id/eprint/398173
PURE UUID: 880f3956-29ac-4f3c-82ea-1d67d677707d
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Date deposited: 21 Jul 2016 10:43
Last modified: 15 Mar 2024 18:34
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Contributors
Author:
Fernando Gea Aguilera
Author:
Xin Zhang
Author:
Thomas Nodé-Langlois
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