TY - GEN
T1 - Low-dimensional signatures of the sound production mechanisms in subsonic jets
T2 - 35th AIAA Fluid Dynamics Conference and Exhibit
AU - Jordan, Peter
AU - Tinney, Charles E.
AU - Delville, Joel
AU - Coiffet, Francois
AU - Glauser, Mark
AU - Hall, André
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:33845599707
SN - 9781624100598
T3 - 35th AIAA Fluid Dynamics Conference and Exhibit
BT - 35th AIAA Fluid Dynamics Conference and Exhibit
Y2 - 6 June 2005 through 9 June 2005
ER -