Acoustic Properties of an In-Duct Orifice Subjected to Bias Flow and High Level Acoustic Excitation
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 (Refereed)
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.
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-128455ISBN: 978-0-9548583-4-6OAI: oai:DiVA.org:kth-128455DiVA: diva2:647621
10th International Conference on Flow-Induced Vibration (& Flow-Induced Noise); Dublin, Ireland, 2nd - 6th July 2012
QC 201309302013-09-112013-09-112013-10-22Bibliographically approved