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Aeroacoustic Investigations on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements

Henning, Arne and Schröder, Andreas and Krebs, Ingo and Agocs, Janos (2010) Aeroacoustic Investigations on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements. 15th International Symposium on Application Laser Techniques to Fluid Mechanics, 05. - 08. July 2010, Lisbon, Portugal.

Full text not available from this repository.

Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2010/

Abstract

Simultaneous PIV and microphone measurements have been performed on a cold jet at three different Mach-numbers from M = 0.5 to M = 0.9. The 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 uctuations. 10, 000 PIV snapshots per field of view have been recorded. The main idea of the concept presented here was to use the coeffcient matrix obtained from the aforementioned correlation to identify regularities in the near-field fluctuations that are related to the radiated sound field. Results will be presented for the M = 0.5 case and a microphone positioned at an angle of 35° to the jet-axis.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Aeroacoustic Investigations on a Cold Jet by Means of Simultaneous PIV and Microphone Measurements
Authors:
AuthorsInstitution or Email of Authors
Henning, ArneTU-Berlin
Schröder, AndreasUNSPECIFIED
Krebs, IngoUNSPECIFIED
Agocs, JanosUNSPECIFIED
Date:2010
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-9
Series Name:Conference Proceedings on USB-Stick
Status:Published
Keywords:Particle Image Velocimetry (PIV), high amplitude sound waves (HASW), cross-correlation
Event Title:15th International Symposium on Application Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:05. - 08. July 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes: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 14:18
Last Modified:21 Jul 2010 14:18

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