Linear stability analysis applied to flow duct acoustics
2010 (English)In: 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society: Volume 1, 2010, 182-185 p.Conference paper (Refereed)
Linear stability analysis is applied to configurations based on a T-junction subjected to grazing flow. This setup is a well-known case where flow-acoustic interaction can result in aperture tones provided sufficient acoustic feedback is present. The flow acoustic interaction is characterised as Rayleigh impedances, these together with the acoustic impedance of the attached components result in a total impedance that characterises the system. Stability analysis is then applied to the derived total impedance using a slightly modified version of the Nyquist criterion as known from control theory.
Place, publisher, year, edition, pages
2010. 182-185 p.
Acoustic feedback, Flow duct, Flow-acoustic interaction, Grazing flows, Nyquist criteria, Rayleigh, Stability analysis, T junctions, Acoustic impedance
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-148897ScopusID: 2-s2.0-84869107556ISBN: 978-161782745-7OAI: oai:DiVA.org:kth-148897DiVA: diva2:738083
20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society, 23 August 2010 through 27 August 2010, Sydney, NSW, Australia
QC 201408152014-08-152014-08-142014-08-15Bibliographically approved