On the interaction of a sound pulse with the shear layer of an axisymmetric jet

L. Maestrello*, A. Bayliss, E. Turkel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The behavior of a sound pulse from a simulated source in a jet is investigated both experimentally and numerically. Both approaches show that in the low and medium frequencies the far field acoustic power exhibits a marked amplification as the flow velocity increases. Experimentally this changes to an attenuation at the higher frequencies which cannot be computed by the numerical model. This amplification is traced to shear noise terms which trigger the instability waves that are inherent within the flow.

Original languageEnglish
Pages (from-to)281-301
Number of pages21
JournalJournal of Sound and Vibration
Volume74
Issue number2
DOIs
StatePublished - 22 Jan 1981
Externally publishedYes

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