NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.

Alvin Bayliss*, L. Maestrello

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The in-flow and near field of a jet which is excited by an axial mass source located in the potential core is simulated numerically, taking due account of the jet spreading, and experimentally, using a shock-tube driver. Comparison is made for both excited and unexcited jets. It is shown that many of the features observed experimentally are consequences of the instability of the mean flow profile and not of turbulence. This instability is shown to be a significant amplifier of low frequency sound. The results demonstrate that a primary component of the observed shear noise in jets is generated by the mean profile instability.

Original languageEnglish (US)
JournalAIAA Paper
StatePublished - Jan 1 1980
EventAIAA Pap AIAA Aeroacoust Conf, 6th - Hartford, CT, USA
Duration: Jun 4 1980Jun 6 1980

ASJC Scopus subject areas

  • Engineering(all)

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