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Aeroacoustic Investigations of a Leading Edge Slat by means of the Causality Correlation Method

Henning, Arne and Spehr, Carsten and Wrede, Björn and Geisler, Reinhard and Pott-Pollenske, Stephan-Michael (2012) Aeroacoustic Investigations of a Leading Edge Slat by means of the Causality Correlation Method. 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference), 04. – 06. Jun. 2012, Colorado Springs, Colorado, USA. DOI: 10.2514/6.2012-2098.

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Official URL: http://www.aiaa.org/events/aeroacoustics/11-0437FINALv1_w.pdf


The goal of the present paper is the experimental detection of noise sources at the leading edge slat in a high-lift device configuration. The noise generation mechanisms are experimentally investigated by means of pressure and velocity measurements in the near-field and microphone measurements in the far-field. The measurements were conducted in a synchronized manner so as to enable the calculation of the cross-correlation between the acoustic pressure and the near-field 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)
Title:Aeroacoustic Investigations of a Leading Edge Slat by means of the Causality Correlation Method
AuthorsInstitution or Email of Authors
Henning, ArneTU-Berlin
Geisler, ReinhardUNSPECIFIED
Pott-Pollenske, Stephan-MichaelUNSPECIFIED
Refereed publication:No
In Open Access:Yes
In ISI Web of Science:No
Page Range:pp. 1-12
Series Name:Conference Proceedings online
Keywords:Causality Correlation Method, Particle Image Velocimetry (PIV), cross correlation, aeroacoustic
Event Title:18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)
Event Location:Colorado Springs, Colorado, USA
Event Type:international Conference
Event Dates:04. – 06. Jun. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:16 Jul 2012 13:33
Last Modified:27 Nov 2012 12:04

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