Goerttler, Andreas und Braukmann, Johannes N. und Wolf, C. Christian und Gardner, Anthony D. und Raffel, Markus (2020) Blade Tip-Vortices of a Four-Bladed Rotor with Axial Inflow. Journal of the American Helicopter Society, 65 (3), Seiten 1-13. American Helicopter Society. doi: 10.4050/JAHS.65.042002. ISSN 0002-8711.
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Offizielle URL: https://doi.org/10.4050/JAHS.65.042002
Kurzfassung
The vortex system of four rotating and pitching DSA-9A blades was examined numerically and experimentally. Numerical computations were performed using German Aerospace Center (DLR)’s finite-volume solver TAU and were validated against experimental data gathered using particle image velocimetry carried out at the rotor test facility (RTG) in Göttingen. Algorithms deriving the vortex position, swirl velocity, circulation, and core radius were implemented. Hover-like conditions with a fixed blade pitch were analyzed giving further physical insights of the static vortex system. These results are used to understand the vortex development for the unsteady pitching conditions, which can be described as a superpositioning of static vortex states. The use of a zonal detached-eddy simulations approach improved physical modeling of the vortex development by resolving finer scales than URANS. Trimmed cases agree well with differences less than 0.5% in the circulation and swirl velocity.
elib-URL des Eintrags: | https://elib.dlr.de/131892/ | ||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||
Zusätzliche Informationen: | ISSN 2161-6027 (Print) | ||||||||||||||||||||||||
Titel: | Blade Tip-Vortices of a Four-Bladed Rotor with Axial Inflow | ||||||||||||||||||||||||
Autoren: |
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Datum: | 24 Juli 2020 | ||||||||||||||||||||||||
Erschienen in: | Journal of the American Helicopter Society | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||
Band: | 65 | ||||||||||||||||||||||||
DOI: | 10.4050/JAHS.65.042002 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 1-13 | ||||||||||||||||||||||||
Herausgeber: |
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Verlag: | American Helicopter Society | ||||||||||||||||||||||||
ISSN: | 0002-8711 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | blade tip vortex, helicopter, rotor, CFD, experiment | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Hubschrauber | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | L RR - Rotorcraft Research | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Der virtuelle Drehflügler (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO | ||||||||||||||||||||||||
Hinterlegt von: | Carter, Beatrice | ||||||||||||||||||||||||
Hinterlegt am: | 25 Aug 2020 16:06 | ||||||||||||||||||||||||
Letzte Änderung: | 27 Okt 2023 14:51 |
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