Passive control of cavity instabilities and noise

K. Knowles; B. Khanal; D. Bray; P. Geraldes

Passive control of cavity instabilities and noise

K. Knowles, B. Khanal, D. Bray, P. Geraldes

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

Abstract

Experiments and computations are presented for transonic flows over cavities having lengthto-depth ratios of 4. Front and rear end walls were yawed 15o and 30o , both parallel and staggered; 3 different saw-tooth spoilers were tested on the rectangular cavity upstream lip. Cavity tones were completely eliminated with 30o yawed walls or with the largest spoiler. Hybrid RANS/LES modelling has suggested a mechanism by which the spoiler achieves tone suppression.

Original language	English
Title of host publication	27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010
Publisher	Optimage Ltd on behalf of the International Council of the Aeronautical Sciences (ICAS)
Volume	Edinburgh, UK
ISBN (Print)	978-0-9565333-0-2
Publication status	Published - 2010
Event	27th Congress of the International Council of the Aeronautical Sciences 2010 - Nice, France Duration: 19 Sept 2010 → 24 Sept 2010

Conference

Conference	27th Congress of the International Council of the Aeronautical Sciences 2010
Abbreviated title	ICAS 2010
Country/Territory	France
City	Nice
Period	19/09/10 → 24/09/10

Cite this

Passive control of cavity instabilities and noise. / Knowles, K.; Khanal, B.; Bray, D. et al.
27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010. Vol. Edinburgh, UK Optimage Ltd on behalf of the International Council of the Aeronautical Sciences (ICAS), 2010.

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

Knowles, K, Khanal, B, Bray, D & Geraldes, P 2010, Passive control of cavity instabilities and noise. in 27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010. vol. Edinburgh, UK, Optimage Ltd on behalf of the International Council of the Aeronautical Sciences (ICAS), 27th Congress of the International Council of the Aeronautical Sciences 2010, Nice, France, 19/09/10.

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AU - Khanal, B.

AU - Bray, D.

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AB - Experiments and computations are presented for transonic flows over cavities having lengthto-depth ratios of 4. Front and rear end walls were yawed 15o and 30o , both parallel and staggered; 3 different saw-tooth spoilers were tested on the rectangular cavity upstream lip. Cavity tones were completely eliminated with 30o yawed walls or with the largest spoiler. Hybrid RANS/LES modelling has suggested a mechanism by which the spoiler achieves tone suppression.

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VL - Edinburgh, UK

BT - 27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010

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T2 - 27th Congress of the International Council of the Aeronautical Sciences 2010

Y2 - 19 September 2010 through 24 September 2010

ER -

Passive control of cavity instabilities and noise

Abstract

Conference

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