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Two-Dimensional Evaluation of Turbulent Boundary Layer Pressure Fluctuations at Cruise Flight Conditions

Haxter, Stefan and Spehr, Carsten (2012) Two-Dimensional Evaluation of Turbulent Boundary Layer Pressure Fluctuations at Cruise Flight Conditions. 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference), 04. - 06. Jun. 2012, Colorado Springs, CO, USA.

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

Abstract

A distributed microphone array was installed on an Airbus model A320 airplane and measurements were performed under various cruise ight conditions. Turbulent boundary layer pressure fluctuations were recorded at several ight altitudes and velocities. The array was installed directly in front of the wing root by replacing three pax windows with aluminum dummy windows equipped with Kulite pressure sensors. Combining the signals via a frequency-domain array processing technique provided information about local flow phenomena. Narrow-band convectional direction was extracted from the measurement data and decay of coherence was determined for the predominant flow direction. Two dimensional coherence of turbulent structures was compared with the empirical models of Corcos and Efimtsov.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Two-Dimensional Evaluation of Turbulent Boundary Layer Pressure Fluctuations at Cruise Flight Conditions
Authors:
AuthorsInstitution or Email of Authors
Haxter, StefanUNSPECIFIED
Spehr, CarstenUNSPECIFIED
Date:2012
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-17
Series Name:Conference Proceedings online
Status:Published
Keywords:Coherence, flow direction, microphone array, flight test, turbulent boundary layer, cruise flight
Event Title:18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)
Event Location:Colorado Springs, CO, 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: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:16 Jul 2012 13:08
Last Modified:09 Oct 2012 15:04

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