Haxter, Stefan und Spehr, Carsten (2014) Listening to Turbulence: Measuring Coherence Decay at Different Positions on an Aircraft in Cruise Flight. In: 20th AIAA/CEAS Aeroacoustics Conference 2014 (3064), Seiten 1-15. American Institute of Aeronautics and Astronautics. 20th AIAA/CEAS Aeroacoustics Conference, 2014-06-16 - 2014-06-20, Atlanta, Georgia, USA. doi: 10.2514/6.2014-3064. ISBN 978-162410285-1.
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Offizielle URL: https://doi.org/10.2514/6.2014-3064
Kurzfassung
The coherence lengths underneath a turbulent boundary layer were measured in flight at several positions on an aircraft. It was found that the coherence length scales with the boundary layer thickness, except for one measurement position where the boundary layer was believed to be disturbed by the vicinity of the wing. A comparison of the data with the models by Corcos and Efimtsov showed an underprediction of the values. However good applicability of the Efimtsov-theory was found when fitted to the measured data. A variation of flight speed and flight altitude showed no considerable change in the coherence length parameters. Variation of interior sound level is therefore not ascribed to a variation of coherence length, but rather to a variation of other parameters.
elib-URL des Eintrags: | https://elib.dlr.de/85106/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Zusätzliche Informationen: | AIAA 2014-3064, 20th AIAA/CEAS Aeroacoustics Conference, DOI: 10.2514/6.2014-3064 | ||||||||||||
Titel: | Listening to Turbulence: Measuring Coherence Decay at Different Positions on an Aircraft in Cruise Flight | ||||||||||||
Autoren: |
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Datum: | Juni 2014 | ||||||||||||
Erschienen in: | 20th AIAA/CEAS Aeroacoustics Conference 2014 | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
DOI: | 10.2514/6.2014-3064 | ||||||||||||
Seitenbereich: | Seiten 1-15 | ||||||||||||
Verlag: | American Institute of Aeronautics and Astronautics | ||||||||||||
Name der Reihe: | Conference Porceedings online | ||||||||||||
ISBN: | 978-162410285-1 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Coherence Decay, Efimtsov Model, Corcos Model, Cruise Flight, Flight Test Measurement | ||||||||||||
Veranstaltungstitel: | 20th AIAA/CEAS Aeroacoustics Conference | ||||||||||||
Veranstaltungsort: | Atlanta, Georgia, USA | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 16 Juni 2014 | ||||||||||||
Veranstaltungsende: | 20 Juni 2014 | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation und Validierung (alt) | ||||||||||||
Standort: | Göttingen | ||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren | ||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||
Hinterlegt am: | 18 Jul 2014 10:20 | ||||||||||||
Letzte Änderung: | 24 Apr 2024 19:51 |
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