ZURUECK HOCH VOR INHALT SUCHEN

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Proposing Institution

DLR Göttingen Abteilung Hubschrauber AS-HEL
Project Manager

Dr. Anthony Gardner
Bunsenstr. 10
37073 Göttingen
Abstract
This is a proposal to produce 3D computations which are fully grid-converged and validated against experiment for 3D dynamic stall, as applicable to helicopter rotor blades. Under fast forward flight or maneuver, the retreating blade of a helicopter can temporarily stall (Dynamic stall), leading to a rapid change in pitching moment and high structural loads. Dynamic stall is an inherently unsteady phenomenon. Computations on 3D configurations have historically not been grid-converged, due to thehigh computational requirements. Likewise, experiments for 3D dynamic stall are rare, requiring high quality wind tunnel models with dynamic movement. Recent advances in CFD mean that fully grid-converged computations of dynamic stall can now be attempted, and recent wind tunnel experiments mean that data is available to validate the method. This investigation is of general interest to the community, and will be a significant advance in the modeling of this type of 3D unsteady flow.

Impressum, Conny Wendler