Low-level flow-induced acoustic resonances in ducts

M. Mathias, A. N. Stokes, K. Hourigan, M. C. Welsh

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)


Acoustic resonances are generated by air moving past a plate with a semi-circular leading edge located in a duct. The sound stimulates the small separation bubble near the leading edge to shed vortices into the boundary layer at the sound frequency. The acoustic energy required to sustain the resonances is generated as these vortices pass the trailing edge of the plate.

Original languageEnglish
Pages (from-to)353-356
Number of pages4
JournalFluid Dynamics Research
Issue number1-4
Publication statusPublished - 1 Sept 1988
Externally publishedYes

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