Abstract
A method is presented for the use of far-field acoustic measurements as a trigger for the conditional averaging of velocity signals taken from inside a jet flow. The triggering procedure is applied to experimental data taken in a jet flow in the anechoic chamber of ISPESL (laboratory of “Agenti Fisici”) where simultaneous acoustic and anemometric measurements were performed. Data are then analyzed through two post-processing techniques, a “direct” and a “wavelet” method. The achieved averaged signals are time signatures of the generating noise coherent structures whose properties and topology are analyzed and discussed as functions of the distance from the nozzle.
Original language | English |
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Pages | 901-911 |
Number of pages | 11 |
DOIs | |
Publication status | Published - 4 Jun 1998 |
Event | 4th AIAA/CEAS Aeroacoustics Conference, 1998 - Toulouse, France Duration: 2 Jun 1998 → 4 Jun 1998 |
Conference
Conference | 4th AIAA/CEAS Aeroacoustics Conference, 1998 |
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Country/Territory | France |
City | Toulouse |
Period | 2/06/98 → 4/06/98 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Aerospace Engineering