Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique

Mahmoud Karimi; Paul Croaker; Nicole Kessissoglou; Con Doolan; Steffen Marburg

Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique

Mahmoud Karimi, Paul Croaker, Nicole Kessissoglou, Con Doolan, Steffen Marburg

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

4 Scopus citations

Abstract

The self-noise generated by a sharp-edged strut immersed in low Mach number flow is predicted using a hybrid computational fluid dynamics (CFD) - boundary element method (BEM) technique. The fluctuating flow field is obtained using an incompressible CFD solver. A high-order reconstruction scheme is used to extract acoustic sources based on Lighthill's analogy from the flow field data. Acoustic waves generated by these flow noise sources propagate to and are scattered by the trailing edge of the strut. A BEM model of the sharp-edged strut, based on the Burton-Miller formulation, is used to predict the scattered sound pressure. A quasi-periodic technique is implemented in the BEM model so that the sound generated by the entire span of the strut can be predicted by modelling only a small spanwise segment. The results from the hybrid CFD-BEM technique are presented for turbulent flow past a sharp-edged strut, with Reynolds number based on chord Re_c=2.07×10⁵ and Mach number M=0.044. The computed aerodynamic and acoustic results are compared with experimental data obtained using the anechoic wind tunnel at the University of Adelaide.

Original language	English
Title of host publication	INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publication	Improving the World Through Noise Control
Editors	John Davy, Marion Burgess, Charles Don, Liz Dowsett, Terry McMinn, Norm Broner
Publisher	Australian Acoustical Society
ISBN (Electronic)	9780909882037
State	Published - 2014
Externally published	Yes
Event	43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia Duration: 16 Nov 2014 → 19 Nov 2014

Publication series

Name	INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control

Conference

Conference	43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Country/Territory	Australia
City	Melbourne
Period	16/11/14 → 19/11/14

Keywords

Boundary element method
Computational fluid dynamics
Trailing edge noise

Cite this

Karimi, M., Croaker, P., Kessissoglou, N., Doolan, C., & Marburg, S. (2014). Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique. In J. Davy, M. Burgess, C. Don, L. Dowsett, T. McMinn, & N. Broner (Eds.), INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control (INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control). Australian Acoustical Society.

Karimi, Mahmoud ; Croaker, Paul ; Kessissoglou, Nicole et al. / Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique. INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. editor / John Davy ; Marion Burgess ; Charles Don ; Liz Dowsett ; Terry McMinn ; Norm Broner. Australian Acoustical Society, 2014. (INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control).

@inproceedings{5d1c5400adee44d180577ceaf4958b65,

title = "Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique",

abstract = "The self-noise generated by a sharp-edged strut immersed in low Mach number flow is predicted using a hybrid computational fluid dynamics (CFD) - boundary element method (BEM) technique. The fluctuating flow field is obtained using an incompressible CFD solver. A high-order reconstruction scheme is used to extract acoustic sources based on Lighthill's analogy from the flow field data. Acoustic waves generated by these flow noise sources propagate to and are scattered by the trailing edge of the strut. A BEM model of the sharp-edged strut, based on the Burton-Miller formulation, is used to predict the scattered sound pressure. A quasi-periodic technique is implemented in the BEM model so that the sound generated by the entire span of the strut can be predicted by modelling only a small spanwise segment. The results from the hybrid CFD-BEM technique are presented for turbulent flow past a sharp-edged strut, with Reynolds number based on chord Rec=2.07×105 and Mach number M=0.044. The computed aerodynamic and acoustic results are compared with experimental data obtained using the anechoic wind tunnel at the University of Adelaide.",

keywords = "Boundary element method, Computational fluid dynamics, Trailing edge noise",

author = "Mahmoud Karimi and Paul Croaker and Nicole Kessissoglou and Con Doolan and Steffen Marburg",

year = "2014",

language = "English",

series = "INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control",

publisher = "Australian Acoustical Society",

editor = "John Davy and Marion Burgess and Charles Don and Liz Dowsett and Terry McMinn and Norm Broner",

booktitle = "INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering",

note = "43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 ; Conference date: 16-11-2014 Through 19-11-2014",

}

Karimi, M, Croaker, P, Kessissoglou, N, Doolan, C & Marburg, S 2014, Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique. in J Davy, M Burgess, C Don, L Dowsett, T McMinn & N Broner (eds), INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, Australian Acoustical Society, 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, Melbourne, Australia, 16/11/14.

Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique. / Karimi, Mahmoud; Croaker, Paul; Kessissoglou, Nicole et al.
INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. ed. / John Davy; Marion Burgess; Charles Don; Liz Dowsett; Terry McMinn; Norm Broner. Australian Acoustical Society, 2014. (INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control).

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

TY - GEN

T1 - Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique

AU - Karimi, Mahmoud

AU - Croaker, Paul

AU - Kessissoglou, Nicole

AU - Doolan, Con

AU - Marburg, Steffen

PY - 2014

Y1 - 2014

N2 - The self-noise generated by a sharp-edged strut immersed in low Mach number flow is predicted using a hybrid computational fluid dynamics (CFD) - boundary element method (BEM) technique. The fluctuating flow field is obtained using an incompressible CFD solver. A high-order reconstruction scheme is used to extract acoustic sources based on Lighthill's analogy from the flow field data. Acoustic waves generated by these flow noise sources propagate to and are scattered by the trailing edge of the strut. A BEM model of the sharp-edged strut, based on the Burton-Miller formulation, is used to predict the scattered sound pressure. A quasi-periodic technique is implemented in the BEM model so that the sound generated by the entire span of the strut can be predicted by modelling only a small spanwise segment. The results from the hybrid CFD-BEM technique are presented for turbulent flow past a sharp-edged strut, with Reynolds number based on chord Rec=2.07×105 and Mach number M=0.044. The computed aerodynamic and acoustic results are compared with experimental data obtained using the anechoic wind tunnel at the University of Adelaide.

AB - The self-noise generated by a sharp-edged strut immersed in low Mach number flow is predicted using a hybrid computational fluid dynamics (CFD) - boundary element method (BEM) technique. The fluctuating flow field is obtained using an incompressible CFD solver. A high-order reconstruction scheme is used to extract acoustic sources based on Lighthill's analogy from the flow field data. Acoustic waves generated by these flow noise sources propagate to and are scattered by the trailing edge of the strut. A BEM model of the sharp-edged strut, based on the Burton-Miller formulation, is used to predict the scattered sound pressure. A quasi-periodic technique is implemented in the BEM model so that the sound generated by the entire span of the strut can be predicted by modelling only a small spanwise segment. The results from the hybrid CFD-BEM technique are presented for turbulent flow past a sharp-edged strut, with Reynolds number based on chord Rec=2.07×105 and Mach number M=0.044. The computed aerodynamic and acoustic results are compared with experimental data obtained using the anechoic wind tunnel at the University of Adelaide.

KW - Boundary element method

KW - Computational fluid dynamics

KW - Trailing edge noise

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M3 - Conference contribution

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BT - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering

A2 - Davy, John

A2 - Burgess, Marion

A2 - Don, Charles

A2 - Dowsett, Liz

A2 - McMinn, Terry

A2 - Broner, Norm

PB - Australian Acoustical Society

T2 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014

Y2 - 16 November 2014 through 19 November 2014

ER -

Karimi M, Croaker P, Kessissoglou N, Doolan C, Marburg S. Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique. In Davy J, Burgess M, Don C, Dowsett L, McMinn T, Broner N, editors, INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society. 2014. (INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control).

Self-noise prediction of a sharp-edged strut using a quasi-periodic cfd-bem technique

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