Low-dimensional signatures of the sound production mechanisms in subsonic jets: Towards their identification and control

Peter Jordan, Charles E. Tinney, Joel Delville, Francois Coiffet, Mark Glauser, André Hall

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

17 Scopus citations

Abstract

Nearfield pressure and turbulence velocity data from measurements performed in subsonic jets with Mach numbers of 0.3 and 0.85 are analysed in the context of feedback control of jet noise. The low-dimensional building-blocks of the pressure and velocity fields are extracted, by means of joint Proper-Orthogonal, Fourierazimuthal Decompositions, and studied with a view to understanding their respective roles in the production of jet noise. These building blocks exhibit many of the characteristics commonly associated with instability waves in forced jets, and it is thus possible to identify their pertinent properties where the production of sound is concerned, properties which will serve as input for an eventual feedback controller.

Original languageEnglish (US)
Title of host publication35th AIAA Fluid Dynamics Conference and Exhibit
StatePublished - Dec 1 2005
Event35th AIAA Fluid Dynamics Conference and Exhibit - Toronto, ON, Canada
Duration: Jun 6 2005Jun 9 2005

Publication series

Name35th AIAA Fluid Dynamics Conference and Exhibit

Other

Other35th AIAA Fluid Dynamics Conference and Exhibit
CountryCanada
CityToronto, ON
Period6/6/056/9/05

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Aerospace Engineering

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