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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.
| 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: |
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| Date: | 2010 | ||||||||||
| Refereed publication: | 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 | ||||||||||
| HGF - Program: | Aeronautics | ||||||||||
| HGF - Program Themes: | L AR - Aircraft Research | ||||||||||
| DLR - Research area: | Aeronautics | ||||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||||
| DLR - Research theme (Project): | L - Flight Physics | ||||||||||
| Location: | Göttingen | ||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Experimental Methods | ||||||||||
| Deposited By: | Ilka Micknaus | ||||||||||
| Deposited On: | 21 Jul 2010 14:10 | ||||||||||
| Last Modified: | 21 Jul 2010 14:10 |
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