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Actuator disc modelling for helicopter rotors

Le Chuiton, F. (2004) Actuator disc modelling for helicopter rotors. Aerospace Science and Technology, 8 (4), Seiten 285-297.

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Kurzfassung

The helicopter project CHANCE contains, among other developments, the quasi-steady approximation to modelling rotors with actuator discs. This reduces the cost of an unsteady simulation down to a stationary one. In testing existing approches in the literature, the source term implementation proved to perform best, especially in forward flight: source terms located on the disc bottom side impart impulse and energy to the fluid. These are obtained from a loose coupling between DLR codes: the flow solver FLOWer and the rotor code S4. The latter provides a rotor map, a radial and azimuthal force distribution, to the former converting it to the actuator disc map (source terms). Low velocities are accounted for using preconditioning. A more flexible Chimera approach can be used. The actuator disc feature has been developed in a parallel framework for shorter turn-around times. Capturing the fuselage/disc interaction using the Chimera capability is demontrated on the HELIFUSE C1 configuration. Next the BO-105 fuselage is used to validate the source term approach by means of a uniform pressure jump. The potential disturbance appears clearly on the disc inflow and pressures on the top centreline match with experimental points. Last, the Dauphin 365N configuration has been used to assess the non-uniform actuator disc. It is checked that previous ONERA results are correctly reproduced with a map provided by ONERA. An actuator disc map derived from S4 is used for further investigation. In particular, it is shown that the vorticity field is particularly well captured.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen: LIDO-Berichtsjahr=2004,
Titel:Actuator disc modelling for helicopter rotors
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Le Chuiton, F.NICHT SPEZIFIZIERT
Datum:2004
Erschienen in:Aerospace Science and Technology
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:8
Seitenbereich:Seiten 285-297
Status:veröffentlicht
Stichwörter:helicopter, interactional aerodynamics, actuator disc, numerics
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Drehflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L RR - Drehflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Der virtuelle Drehflügler
Standort: Köln-Porz , Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Claudia Grant
Hinterlegt am:11 Jan 2006
Letzte Änderung:14 Jan 2010 19:37

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