Klein, Alexander und Richter, Kai und Altmikus, Andree und Lutz, Thorsten und Krämer, Ewald (2009) Unsteady Criteria for Rotor Blade Airfoil Design. 35th European Rotorcraft Forum, 22.-25. September 2009, Hamburg.
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
The present paper deals with the definition and application of different unsteady criteria that may be considered in a dedicated aerodynamic design of rotorcraft airfoils. Today’s airfoil design methodologies for rotorcraft applications rely on steady computations and design criteria. Due to the inherent flow unsteadiness at forward flight, caused by variable incoming flow velocity, cyclic pitching as well as blade motion and deformation, it is however deemed necessary to further take into account unsteady aerodynamic effects and characteristics of the airfoil in the design process. Unsteady criteria are introduced for both 2D rotor-environment simulations with varying freestream Mach number and angle of attack and for high-frequency, small amplitude harmonic pitch oscillations at constant Mach number. By means of URANS simulations, with numerical settings validated against experiments, these criteria are exemplarily applied to the OA209 rotor blade airfoil geometry.
elib-URL des Eintrags: | https://elib.dlr.de/59564/ | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Konferenzbeitrag (Paper) | ||||||||||||||||||||||||
Titel: | Unsteady Criteria for Rotor Blade Airfoil Design | ||||||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||||||
Datum: | 22 September 2009 | ||||||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | 2D unsteady airfoil characteristics, dynamic stall, URANS FLOWer, OA209, Liiva criterion | ||||||||||||||||||||||||
Veranstaltungstitel: | 35th European Rotorcraft Forum | ||||||||||||||||||||||||
Veranstaltungsort: | Hamburg | ||||||||||||||||||||||||
Veranstaltungsart: | Konferenz | ||||||||||||||||||||||||
Veranstaltungsdatum: | 22.-25. September 2009 | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Drehflügler (alt) | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | L RR - Drehflüglerforschung | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Der virtuelle Drehflügler (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hochgeschwindigkeitskonfigurationen | ||||||||||||||||||||||||
Hinterlegt von: | Richter, Kai | ||||||||||||||||||||||||
Hinterlegt am: | 28 Jul 2009 09:30 | ||||||||||||||||||||||||
Letzte Änderung: | 19 Okt 2009 09:50 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags