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Landing gear noise prediction using high-order finite difference schemes

Landing gear noise prediction using high-order finite difference schemes
Landing gear noise prediction using high-order finite difference schemes
Aerodynamic noise from a generic two-wheel landing-gear model is predicted by a CFD/FW-H hybrid approach. The unsteady flow-field is computed using a compressible Navier–Stokes solver based on high-order finite difference schemes and a fully structured grid. The calculated time history of the surface pressure data is used in an FW-H solver to predict the far-field noise levels. Both aerodynamic and aeroacoustic results are compared to wind tunnel measurements and are found to be in good agreement. The far-field noise was found to vary with the 6th power of the free-stream velocity. Individual contributions from three components, i.e. wheels, axle and strut of the landing-gear model are also investigated to identify the relative contribution to the total noise by each component. It is found that the wheels are the dominant noise source in general. Strong vortex shedding from the axle is the second major contributor to landing-gear noise. This work is part of Airbus LAnding Gear nOise database for CAA validatiON (LAGOON) program with the general purpose of evaluating current CFD/CAA and experimental techniques for airframe noise prediction.
0022-460X
3517-3534
Liu, W.
af656440-51e8-45c8-b694-a802e71b671e
Kim, J.W.
fedabfc6-312c-40fd-b0c1-7b4a3ca80987
Zhang, X.
3056a795-80f7-4bbd-9c75-ecbc93085421
Angland, D.
b86880c6-31fa-452b-ada8-4bbd83cda47f
Bastien, C.
224ff58a-cec9-4507-9882-9f8fe0ee5c24
Liu, W.
af656440-51e8-45c8-b694-a802e71b671e
Kim, J.W.
fedabfc6-312c-40fd-b0c1-7b4a3ca80987
Zhang, X.
3056a795-80f7-4bbd-9c75-ecbc93085421
Angland, D.
b86880c6-31fa-452b-ada8-4bbd83cda47f
Bastien, C.
224ff58a-cec9-4507-9882-9f8fe0ee5c24

Liu, W., Kim, J.W., Zhang, X., Angland, D. and Bastien, C. (2013) Landing gear noise prediction using high-order finite difference schemes. Journal of Sound and Vibration, 332 (14), 3517-3534. (doi:10.1016/j.jsv.2013.01.035).

Record type: Article

Abstract

Aerodynamic noise from a generic two-wheel landing-gear model is predicted by a CFD/FW-H hybrid approach. The unsteady flow-field is computed using a compressible Navier–Stokes solver based on high-order finite difference schemes and a fully structured grid. The calculated time history of the surface pressure data is used in an FW-H solver to predict the far-field noise levels. Both aerodynamic and aeroacoustic results are compared to wind tunnel measurements and are found to be in good agreement. The far-field noise was found to vary with the 6th power of the free-stream velocity. Individual contributions from three components, i.e. wheels, axle and strut of the landing-gear model are also investigated to identify the relative contribution to the total noise by each component. It is found that the wheels are the dominant noise source in general. Strong vortex shedding from the axle is the second major contributor to landing-gear noise. This work is part of Airbus LAnding Gear nOise database for CAA validatiON (LAGOON) program with the general purpose of evaluating current CFD/CAA and experimental techniques for airframe noise prediction.

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More information

Submitted date: 22 May 2012
Published date: 8 July 2013
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 197735
URI: http://eprints.soton.ac.uk/id/eprint/197735
ISSN: 0022-460X
PURE UUID: 80d7bf6d-3393-4c89-bc4d-f40140bbed0a
ORCID for J.W. Kim: ORCID iD orcid.org/0000-0003-0476-2574

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Date deposited: 27 Sep 2011 09:20
Last modified: 17 Dec 2019 01:46

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Contributors

Author: W. Liu
Author: J.W. Kim ORCID iD
Author: X. Zhang
Author: D. Angland
Author: C. Bastien

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