Aeroacoustic source contributions to sound power

Esmaeel Eftekharian; Paul Croaker; Steffen Marburg; Nicole Kessissoglou

Aeroacoustic source contributions to sound power

Esmaeel Eftekharian
, Paul Croaker
, Steffen Marburg
, Nicole Kessissoglou

Chair of Vibro-Acoustics of Vehicles and Machines

University of New South Wales
Defence Science and Technology Group

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A technique to investigate the contributions of aeroacoustic sources to the sound power is presented. The method combines the Lighthill source distribution with an acoustic impedance matrix constructed from radiation kernels of the free-field Green's function. By calculating the contributions of aeroacoustic sources to sound power, the location and nature of the dominant flow noise sources are identified. To demonstrate the technique, the flow noise produced by a pair of co-rotating vortices is examined. The aeroacoustic contribution of each component of the Lighthill tensor is determined for a range of wavenumbers, with key findings discussed.

Original language	English
Title of host publication	Annual Conference of the Australian Acoustical Society 2021
Subtitle of host publication	Making Waves, AAS 2021
Publisher	Australian Acoustical Society
Pages	397-398
Number of pages	2
ISBN (Electronic)	9781713844266
State	Published - 2021
Event	2021 Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021 - Woolongong, Australia Duration: 21 Feb 2022 → 23 Feb 2022

Publication series

Name	Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021

Conference

Conference	2021 Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021
Country/Territory	Australia
City	Woolongong
Period	21/02/22 → 23/02/22

Cite this

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title = "Aeroacoustic source contributions to sound power",

abstract = "A technique to investigate the contributions of aeroacoustic sources to the sound power is presented. The method combines the Lighthill source distribution with an acoustic impedance matrix constructed from radiation kernels of the free-field Green's function. By calculating the contributions of aeroacoustic sources to sound power, the location and nature of the dominant flow noise sources are identified. To demonstrate the technique, the flow noise produced by a pair of co-rotating vortices is examined. The aeroacoustic contribution of each component of the Lighthill tensor is determined for a range of wavenumbers, with key findings discussed.",

author = "Esmaeel Eftekharian and Paul Croaker and Steffen Marburg and Nicole Kessissoglou",

note = "Publisher Copyright: Copyright{\textcopyright} (2021) by Australian Acoustical Society. All rights reserved.; 2021 Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021 ; Conference date: 21-02-2022 Through 23-02-2022",

year = "2021",

language = "English",

series = "Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021",

publisher = "Australian Acoustical Society",

pages = "397--398",

booktitle = "Annual Conference of the Australian Acoustical Society 2021",

}

Eftekharian, E, Croaker, P, Marburg, S & Kessissoglou, N 2021, Aeroacoustic source contributions to sound power. in Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021. Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021, Australian Acoustical Society, pp. 397-398, 2021 Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021, Woolongong, Australia, 21/02/22.

Aeroacoustic source contributions to sound power. / Eftekharian, Esmaeel; Croaker, Paul; Marburg, Steffen et al.
Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021. Australian Acoustical Society, 2021. p. 397-398 (Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Aeroacoustic source contributions to sound power

AU - Eftekharian, Esmaeel

AU - Croaker, Paul

AU - Marburg, Steffen

AU - Kessissoglou, Nicole

PY - 2021

Y1 - 2021

N2 - A technique to investigate the contributions of aeroacoustic sources to the sound power is presented. The method combines the Lighthill source distribution with an acoustic impedance matrix constructed from radiation kernels of the free-field Green's function. By calculating the contributions of aeroacoustic sources to sound power, the location and nature of the dominant flow noise sources are identified. To demonstrate the technique, the flow noise produced by a pair of co-rotating vortices is examined. The aeroacoustic contribution of each component of the Lighthill tensor is determined for a range of wavenumbers, with key findings discussed.

AB - A technique to investigate the contributions of aeroacoustic sources to the sound power is presented. The method combines the Lighthill source distribution with an acoustic impedance matrix constructed from radiation kernels of the free-field Green's function. By calculating the contributions of aeroacoustic sources to sound power, the location and nature of the dominant flow noise sources are identified. To demonstrate the technique, the flow noise produced by a pair of co-rotating vortices is examined. The aeroacoustic contribution of each component of the Lighthill tensor is determined for a range of wavenumbers, with key findings discussed.

UR - https://www.scopus.com/pages/publications/85128074918

M3 - Conference contribution

AN - SCOPUS:85128074918

T3 - Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021

SP - 397

EP - 398

BT - Annual Conference of the Australian Acoustical Society 2021

PB - Australian Acoustical Society

T2 - 2021 Annual Conference of the Australian Acoustical Society 2021: Making Waves, AAS 2021

Y2 - 21 February 2022 through 23 February 2022

ER -

Aeroacoustic source contributions to sound power

Abstract

Publication series

Conference

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