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Acoustic Properties of an In-Duct Orifice Subjected to Bias Flow and High Level Acoustic Excitation
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0002-8474-8563
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).
2012 (English)In: Proceedings of the 10th International conference on Flow-Induced Vibration (& Flow-Induced Noise): FIV2012, Dublin, Ireland, 3-6 July 2012 FLOW-INDUCED VIBRATION, 2012, 187-193 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper experimentally investigates the acousticproperties of an orifice with bias flow under medium andhigh sound level excitation. The test included no bias flowand two bias speeds for three different frequencies. Experimentalresults are compared and discussed with theory.It is shown that bias flow makes the acoustic propertiesmuch more complex compared theory and with theno bias flow case, especially when velocity ratio betweenacoustic particle velocity and mean flow velocity is nearunity.

Place, publisher, year, edition, pages
2012. 187-193 p.
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-128455ISBN: 978-0-9548583-4-6 (print)OAI: oai:DiVA.org:kth-128455DiVA: diva2:647621
Conference
10th International Conference on Flow-Induced Vibration (& Flow-Induced Noise); Dublin, Ireland, 2nd - 6th July 2012
Note

QC 20130930

Available from: 2013-09-11 Created: 2013-09-11 Last updated: 2013-10-22Bibliographically approved

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