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Experimental Evidence of Turbulent Source Coherence Affecting Jet Noise

Fuchs, Helmut V. and Michel, Ulf (1978) Experimental Evidence of Turbulent Source Coherence Affecting Jet Noise. AIAA Journal, 16 (9), pp. 871-872. American Institute of Aeronautics and Astronautics.

Full text not available from this repository.

Official URL: http://www.aiaa.org

Abstract

This study is a follow-up to a theoretical and experimental investigation by Armstrong et al. aimed at directly coupling jet turbulence and noise. Since the numerical calculation of the far-field pressure from measured pressure correlations in the jet near field has not been achieved yet, both fields are analyzed separately and their respective space-time structures compared herein. Azimuthal coherence data of model jets and a jet engine reveal that the pressure field is always governed by a few low-order azimuthal constituents. This underlines the importance of "coherent structures" in the jet mixing zone.

Item URL in elib:https://elib.dlr.de/22189/
Document Type:Article
Title:Experimental Evidence of Turbulent Source Coherence Affecting Jet Noise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fuchs, Helmut V.UNSPECIFIEDUNSPECIFIED
Michel, UlfUNSPECIFIEDUNSPECIFIED
Date:September 1978
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:16
Page Range:pp. 871-872
Publisher:American Institute of Aeronautics and Astronautics
Keywords:jet noise, pressure correlations, azimuthal coherence, source coherence
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Köln-Porz , Berlin-Adlershof
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic > Turbulence Research
Deposited By: Michel, Prof. Dr.-Ing. Ulf
Deposited On:14 Aug 2006
Last Modified:27 Apr 2009 04:59

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