Passive control of cavity instabilities and noise

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

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

1 Citation (Scopus)

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 languageEnglish
Title of host publication27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010
PublisherOptimage Ltd on behalf of the International Council of the Aeronautical Sciences (ICAS)
VolumeEdinburgh, UK
ISBN (Print)978-0-9565333-0-2
Publication statusPublished - 2010
Event27th Congress of the International Council of the Aeronautical Sciences 2010 - Nice, France
Duration: 19 Sep 201024 Sep 2010

Conference

Conference27th Congress of the International Council of the Aeronautical Sciences 2010
Abbreviated title ICAS 2010
CountryFrance
CityNice
Period19/09/1024/09/10

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    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).