Siegel, Lars und Henning, Arne und Ehrenfried, Klaus und Wagner, Claus (2015) Intensity-Analysis of Cross-Correlated Synchronized PIV and Microphone Measurements. 17. STAB-Workshop, 10.-11. November 2015, Göttingen, Deutschland.
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Kurzfassung
An approach towards the identification of flow structures related to the aeroacoustic source mechanism in turbulent flows is presented. The new methodology is based on an analysis of the generalized intensity which is obtained considering an acoustic analogy and the existence of an energy conservation principle. The intensity distribution in the flow-field is derived from the correlation matrix, resulting from velocity fluctuations in the flow field captured via particle image velocimetry (PIV) and from the pressure field in the acoustic far-field. The approach is applied to two flow cases, namely a cylinder wake and the slat flow of a high lift configuration. Regions of effective production of fluctuation energy are identified, allowing conclusions about noise sources in the turbulent flow region.
elib-URL des Eintrags: | https://elib.dlr.de/98521/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Titel: | Intensity-Analysis of Cross-Correlated Synchronized PIV and Microphone Measurements | ||||||||||||||||||||
Autoren: |
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Datum: | 2015 | ||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Seitenbereich: | Seiten 132-133 | ||||||||||||||||||||
Name der Reihe: | Jahresbericht 2015, STAB-Mitteilung | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | PIV, aeroacoustic, acoustic analogy, noise sources, flow structures, generalized intensity, fluctuation energy, cylinder wake, slat flow | ||||||||||||||||||||
Veranstaltungstitel: | 17. STAB-Workshop | ||||||||||||||||||||
Veranstaltungsort: | Göttingen, Deutschland | ||||||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||||||
Veranstaltungsdatum: | 10.-11. November 2015 | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Verkehr | ||||||||||||||||||||
HGF - Programmthema: | Bodengebundener Verkehr (alt) | ||||||||||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||||||||||
DLR - Forschungsgebiet: | V BF - Bodengebundene Fahrzeuge | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - Next Generation Train III (alt) | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||
Hinterlegt am: | 24 Nov 2015 14:09 | ||||||||||||||||||||
Letzte Änderung: | 10 Mai 2016 23:32 |
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