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Causality Correlation Analysis on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements

Henning, Arne and Schröder, Andreas and Koop, Lars and Agocs, Janos (2010) Causality Correlation Analysis on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements. 16th AIAA/CEAS Aeroacoustics Conference, 07. - 09. Jun. 2010 , Stockholm, Sweden. ISBN 978-1-60086-744-6

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Official URL: http://www.aiaa.org/content.cfm?pageid=230&lumeetingid=2386

Abstract

The aeroacoustic sound generation process on a cold jet at M = 0.68 has been investigated by means of simultaneous Particle-Image-Velocimetry (PIV) in the near-field and phased microphone-array measurements in the far-field. 8 500 PIV snapshots in the field of view have been recorded. Both measurements were conducted in a synchronized manner so as to enable the calculation of the cross-correlation between the acoustic pressure and flow quantities derived from the measured velocity fluctuations. The main idea of the concept presented here was to use the coefficient matrix obtained from the aforementioned correlation to identify regularities in the near-field fluctuations that are related to the radiated sound field.

Item URL in elib:https://elib.dlr.de/61945/
Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:AiAA-2010-3753
Title:Causality Correlation Analysis on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Henning, ArneTU-BerlinUNSPECIFIED
Schröder, AndreasUNSPECIFIEDUNSPECIFIED
Koop, LarsUNSPECIFIEDUNSPECIFIED
Agocs, JanosUNSPECIFIEDUNSPECIFIED
Date:2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Vol. 15
Page Range:pp. 1-11
Series Name:AIAA Meeting Papers on Disc (DVD-ROM)
ISBN:978-1-60086-744-6
Status:Published
Keywords:Particle-Image-Velocimetry (PIV), microphone-array, aeroacoustic sound generation process, cross-correlation
Event Title:16th AIAA/CEAS Aeroacoustics Conference
Event Location:Stockholm, Sweden
Event Type:international Conference
Event Dates:07. - 09. Jun. 2010
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:21 Jul 2010 14:10
Last Modified:21 Jul 2010 14:10

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