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Fuchs, Helmut V. und Michel, Ulf (1977) Experimental evidence of turbulent source coherence effecting jet noise. American Institute of Aeronautics and Astronautics. 4th Aeroacoustics Conference, 1977-10-03 - 1977-10-05, Atlanta, GA (USA).
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Offizielle URL: http://www.aiaa.org
Kurzfassung
Previous experimental investigations into the turbulence structure in model-scale, cold air jets have led to a new model of large-scale, coherent (i.e. acoustically non-compact) sources generating jet mixing noise. More recent coherence measuremnts in the near field of a real jet engine and in the far field of cold and hot jets lend further support to the belief that jet noise at small angles to the jet axis is strongly effected by coherent sources in the jet mixing region. This has several consequences regarding the relevant parameters in scaling laws for jet noise and sheds new light on the "cone of silence" and "convective amplitifcation" issues, both effects having been derived from a model of acoustic point sources ("eddies") convected with the sheared flow.
| elib-URL des Eintrags: | https://elib.dlr.de/22188/ | ||||||||||||
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| Dokumentart: | Konferenzbeitrag (Paper) | ||||||||||||
| Titel: | Experimental evidence of turbulent source coherence effecting jet noise | ||||||||||||
| Autoren: |
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| Datum: | 3 Oktober 1977 | ||||||||||||
| Referierte Publikation: | Ja | ||||||||||||
| Open Access: | Nein | ||||||||||||
| Gold Open Access: | Nein | ||||||||||||
| In SCOPUS: | Nein | ||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||
| Verlag: | American Institute of Aeronautics and Astronautics | ||||||||||||
| Name der Reihe: | AIAA Paper 77-1348 | ||||||||||||
| Stichwörter: | jet noise, coherent structures, source coherence, coherent sources, cone of silence | ||||||||||||
| Veranstaltungstitel: | 4th Aeroacoustics Conference | ||||||||||||
| Veranstaltungsort: | Atlanta, GA (USA) | ||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||
| Veranstaltungsbeginn: | 3 Oktober 1977 | ||||||||||||
| Veranstaltungsende: | 5 Oktober 1977 | ||||||||||||
| HGF - Forschungsbereich: | keine Zuordnung | ||||||||||||
| HGF - Programm: | keine Zuordnung | ||||||||||||
| HGF - Programmthema: | keine Zuordnung | ||||||||||||
| DLR - Schwerpunkt: | keine Zuordnung | ||||||||||||
| DLR - Forschungsgebiet: | keine Zuordnung | ||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | keine Zuordnung | ||||||||||||
| Standort: | Köln-Porz , Berlin-Adlershof | ||||||||||||
| Institute & Einrichtungen: | Institut für Antriebstechnik > Triebwerksakustik > Lärm- und Turbulenzforschung | ||||||||||||
| Hinterlegt von: | Michel, Prof. Dr.-Ing. Ulf | ||||||||||||
| Hinterlegt am: | 14 Aug 2006 | ||||||||||||
| Letzte Änderung: | 24 Apr 2024 19:03 |
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