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Fan wake modelling for computational aeroacoustic simulations of turbulence-cascade interaction noise

Fan wake modelling for computational aeroacoustic simulations of turbulence-cascade interaction noise
Fan wake modelling for computational aeroacoustic simulations of turbulence-cascade interaction noise
The present work addresses the numerical modelling of fan wakes using synthetic turbulence and its influence on turbulence-cascade interaction noise predictions. Initial results show that cascade noise only depends on the circumferentially-averaged turbulence spectra that interact with the cascade. Consequently, isotropic turbulence produces noise predictions with approximately the same level of accuracy than fan wakes with cyclostationary variations in both turbulent kinetic energy and integral length scale. The paper also includes a parameter study on the effects of vane count and camber on cascade noise from thick aerofoils. Numerical results show that vane count may have a significant effect on noise predictions at low frequencies, whereas the effects of camber are negligible.
Gea Aguilera, Fernando
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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
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) Fan wake modelling for computational aeroacoustic simulations of turbulence-cascade interaction noise. Greener Aviation 2016, Brussels, Belgium. 11 - 13 Oct 2016. 12 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The present work addresses the numerical modelling of fan wakes using synthetic turbulence and its influence on turbulence-cascade interaction noise predictions. Initial results show that cascade noise only depends on the circumferentially-averaged turbulence spectra that interact with the cascade. Consequently, isotropic turbulence produces noise predictions with approximately the same level of accuracy than fan wakes with cyclostationary variations in both turbulent kinetic energy and integral length scale. The paper also includes a parameter study on the effects of vane count and camber on cascade noise from thick aerofoils. Numerical results show that vane count may have a significant effect on noise predictions at low frequencies, whereas the effects of camber are negligible.

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More information

Accepted/In Press date: 1 April 2016
Published date: 11 October 2016
Venue - Dates: Greener Aviation 2016, Brussels, Belgium, 2016-10-11 - 2016-10-13
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 401593
URI: http://eprints.soton.ac.uk/id/eprint/401593
PURE UUID: b68b4412-60c9-43c7-93a9-e6bd6354f9c6

Catalogue record

Date deposited: 14 Oct 2016 14:36
Last modified: 15 Mar 2024 02:51

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Contributors

Author: Fernando Gea Aguilera
Author: James Gill
Author: Xin Zhang
Author: Thomas Nodé-Langlois

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