Bartzsch, Hauke Till und Wolf, C. Christian und Gardner, Anthony und Braune, Marc und Löhr, Markus (2023) Towards Tip Vortex Measurements on Rotors in the High Pressure Wind Tunnel Göttingen (HDG) of the DLR. In: 21. STAB-Workshop - Jahresbericht 2023, Seiten 48-49. 21. STAB - Workshop 2023, 2023-11-07 - 2023-11-08, Göttingen, Deutschland.
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Offizielle URL: https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/Jahresbericht2023.pdf
Kurzfassung
The wake of a helicopter rotor features vortices originating from the blade tips. The vortices are relevant for the rotor noise and rotor performance, hence, the analysis of their propagation, growth and decay is of particular interest. It is widely believed that the vortex Reynolds number, defined as the ratio of the vortex circulation to the fluid viscosity, is an important factor in this process. Being related to turbulence and instability mechanisms, the Reynolds number effect on the vortex evolution is difficult to capture in numerical simulations. Therefore, experiments with a variation of the Reynolds number are required. Atmospheric subscale test facilities cannot reproduce the Reynolds numbers encountered on full-size helicopter rotors due to size limitations, whereas field measurements on free-flying helicopters are affected by the engine exhaust flow, wind gusts, blockage of the fuselage, tail rotor, etc. Furthermore, neither approach enables a variation of the Reynolds number independently of the rotational speed and the rotor dimensions. Therefore, we chose DLR’s High Pressure Wind Tunnel Göttingen (HDG) for measurements with a varying Reynolds number. The current work discusses the experimental methodology and sample results from a pretest.
elib-URL des Eintrags: | https://elib.dlr.de/199219/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||
Titel: | Towards Tip Vortex Measurements on Rotors in the High Pressure Wind Tunnel Göttingen (HDG) of the DLR | ||||||||||||||||||||||||
Autoren: |
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Datum: | 7 November 2023 | ||||||||||||||||||||||||
Erschienen in: | 21. STAB-Workshop - Jahresbericht 2023 | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Seitenbereich: | Seiten 48-49 | ||||||||||||||||||||||||
Herausgeber: |
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Name der Reihe: | Jahresbericht | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | aerodynamics, helicopter, helicopter wake, BOS, vortex decay, Reynolds number, wind tunnel, vortex interaction, hover | ||||||||||||||||||||||||
Veranstaltungstitel: | 21. STAB - Workshop 2023 | ||||||||||||||||||||||||
Veranstaltungsort: | Göttingen, Deutschland | ||||||||||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||||||||||
Veranstaltungsbeginn: | 7 November 2023 | ||||||||||||||||||||||||
Veranstaltungsende: | 8 November 2023 | ||||||||||||||||||||||||
Veranstalter : | DLR, STAB | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtueller Hubschrauber und Validierung | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO Institut für Aeroelastik > Aeroelastische Experimente | ||||||||||||||||||||||||
Hinterlegt von: | Koch, Bianca | ||||||||||||||||||||||||
Hinterlegt am: | 06 Dez 2023 14:16 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:59 |
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