Acoustic reflection of vorticity waves at a shrouded-jet exit in "howling" resonances

Arnab Samanta, Jonathan B. Freund

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

Abstract

At some operating conditions shrouded jets are observed to undergo an intense howling resonance. The coupling of vortical modes in the jet with acoustic modes at the shroud exit, which potentially close the resonance loop, are investigated with a vortex sheet model, which is solved using scalar Wiener-Hopf techniques. Peculiar sensitivities to flow parameters are observed that might explain the sporadic character of the observed howling resonance.

Original languageEnglish (US)
Title of host publication14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)
StatePublished - Dec 1 2008
Event14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference) - Vancouver, BC, Canada
Duration: May 5 2008May 7 2008

Publication series

Name14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)

Other

Other14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)
CountryCanada
CityVancouver, BC
Period5/5/085/7/08

ASJC Scopus subject areas

  • Engineering(all)

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    Samanta, A., & Freund, J. B. (2008). Acoustic reflection of vorticity waves at a shrouded-jet exit in "howling" resonances. In 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference) [2008-3051] (14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)).