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Klähn, Lukas und Moreau, Antoine und Caldas, Luciano und Tapken, Ulf (2022) Assessment of in-duct fan broadband noise measurements in a modern low-speed test rig. In: International Conference of Fan Noise, Aerodynamics, Applications and Systems 2022. International Conference of Fan Noise, Aerodynamics, Applications and Systems 2022, 2022-04-06, Senlis, Frankreich. doi: 10.26083/tuprints-00021709. (eingereichter Beitrag)
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Offizielle URL: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21709
Kurzfassung
The rotor-incoherent components of the sound field emitted by a fan stage in an aeroacoustic fan test rig are analyzed by means of a radial mode analysis with a combined axial and azimuthal sensor array. The resulting sound power is separated into broadband components and narrowband components around the blade passing frequencies, which are not to be confused with pure tones. The trends of the broadband components are linked to the blade loading and flow coefficient. The narrowband components, that are associated with elongated ingested turbulence, are reduced by a honeycomb. Measurements are compared to simulated data obtained from a physics based analytical noise prediction model and to results obtained for a different test rig.
| elib-URL des Eintrags: | https://elib.dlr.de/193955/ | ||||||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
| Titel: | Assessment of in-duct fan broadband noise measurements in a modern low-speed test rig | ||||||||||||||||||||
| Autoren: |
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| Datum: | 2022 | ||||||||||||||||||||
| Erschienen in: | International Conference of Fan Noise, Aerodynamics, Applications and Systems 2022 | ||||||||||||||||||||
| Referierte Publikation: | Nein | ||||||||||||||||||||
| Open Access: | Ja | ||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||
| DOI: | 10.26083/tuprints-00021709 | ||||||||||||||||||||
| Status: | eingereichter Beitrag | ||||||||||||||||||||
| Stichwörter: | Fan noise, test rig, noise prediction method, rotor-incoherent noise, broadband noise, turbulence | ||||||||||||||||||||
| Veranstaltungstitel: | International Conference of Fan Noise, Aerodynamics, Applications and Systems 2022 | ||||||||||||||||||||
| Veranstaltungsort: | Senlis, Frankreich | ||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
| Veranstaltungsdatum: | 6 April 2022 | ||||||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||||||
| HGF - Programmthema: | Umweltschonender Antrieb | ||||||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
| DLR - Forschungsgebiet: | L CP - Umweltschonender Antrieb | ||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Triebwerkskonzepte und -integration | ||||||||||||||||||||
| Standort: | Berlin-Charlottenburg | ||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Antriebstechnik | ||||||||||||||||||||
| Hinterlegt von: | Klähn, Lukas | ||||||||||||||||||||
| Hinterlegt am: | 20 Feb 2023 09:03 | ||||||||||||||||||||
| Letzte Änderung: | 24 Apr 2024 20:54 |
Verfügbare Versionen dieses Eintrags
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Assessment of in-duct fan broadband noise measurements in a modern low-speed test rig. (deposited 05 Jan 2022 15:27)
- Assessment of in-duct fan broadband noise measurements in a modern low-speed test rig. (deposited 20 Feb 2023 09:03) [Gegenwärtig angezeigt]
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