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Broadband leading edge interaction noise prediction using simulated grid turbulence

Broadband leading edge interaction noise prediction using simulated grid turbulence
Broadband leading edge interaction noise prediction using simulated grid turbulence

The use of an inlet geometry-based turbulence creation method for large eddy simulations (LES) on unstructured meshes is investigated for the purpose of simulating broadband leading edge noise of an infinite airfoil ingesting turbulence. By comparing to analytical models and experimental data, it is shown that realistic turbulence is created with partial capture of the inertial subrange. The turbulent flow is shown to be homogeneous and isotropic to within similar variations that have been reported in experiments. Far field noise is calculated by sampling the surface pressure on the airfoil and computing the radiation to the farfield with a Ffowcs-Williams and Hawkings solver. Comparisons are made with predictions of leading edge interaction noise using the analytical model of Amiet. It is found that noise in the dominant low to mid frequency ranges are well predicted, including the effects of compressibility on the farfield noise.

American Institute of Aeronautics and Astronautics
Petrikat, Andreas
2398cae5-e8cd-413e-912e-a7be2f4f2e6b
Karve, Ravish
e42d4414-7a27-451a-9ab4-5a0b33627469
Angland, David
b86880c6-31fa-452b-ada8-4bbd83cda47f
Petrikat, Andreas
2398cae5-e8cd-413e-912e-a7be2f4f2e6b
Karve, Ravish
e42d4414-7a27-451a-9ab4-5a0b33627469
Angland, David
b86880c6-31fa-452b-ada8-4bbd83cda47f

Petrikat, Andreas, Karve, Ravish and Angland, David (2018) Broadband leading edge interaction noise prediction using simulated grid turbulence. In 2018 AIAA/CEAS Aeroacoustics Conference. American Institute of Aeronautics and Astronautics.. (doi:10.2514/6.2018-3286).

Record type: Conference or Workshop Item (Paper)

Abstract

The use of an inlet geometry-based turbulence creation method for large eddy simulations (LES) on unstructured meshes is investigated for the purpose of simulating broadband leading edge noise of an infinite airfoil ingesting turbulence. By comparing to analytical models and experimental data, it is shown that realistic turbulence is created with partial capture of the inertial subrange. The turbulent flow is shown to be homogeneous and isotropic to within similar variations that have been reported in experiments. Far field noise is calculated by sampling the surface pressure on the airfoil and computing the radiation to the farfield with a Ffowcs-Williams and Hawkings solver. Comparisons are made with predictions of leading edge interaction noise using the analytical model of Amiet. It is found that noise in the dominant low to mid frequency ranges are well predicted, including the effects of compressibility on the farfield noise.

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More information

e-pub ahead of print date: 24 June 2018
Published date: 25 June 2018
Venue - Dates: AIAA/CEAS Aeroacoustics Conference, 2018, Atlanta, United States, 2018-06-25 - 2018-06-29

Identifiers

Local EPrints ID: 424613
URI: http://eprints.soton.ac.uk/id/eprint/424613
PURE UUID: be09d3c1-bcb3-4e1d-903e-8677f54c7365

Catalogue record

Date deposited: 05 Oct 2018 11:39
Last modified: 17 Jan 2019 17:30

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