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Tip Vortex Dynamics of a Pitching Rotor Blade Tip Model

Wolf, Christian C. and Merz, Christoph B. and Richter, Kai and Raffel, Markus (2015) Tip Vortex Dynamics of a Pitching Rotor Blade Tip Model. 53rd AIAA Aerospace Sciences Meeting, 05. - 09. Jan. 2015, Kissimmee, FL, USA. doi: 10.2514/6.2015-1492.

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2015-1492


The tip vortex of a finite wing undergoing dynamic pitch oscillations is investigated by means of an experimental wind tunnel study. The motion and flow parameters as well as the model geometry were adapted to rotorcraft applications, including test cases with fully attached flow, light stall, and deep dynamic stall. High-speed Particle Image Velocimetry was used to study the spatio-temporal behavior of the tip wake at different streamwise positions. Combined to surface pressure measurements, the data establishes a connection between the sectional lift of the model and vortex parameters (trajectory, core radius, circulation, etc), including dynamic phenomena like hysteresis and vortex breakdown during stalled flow conditions.

Item URL in elib:https://elib.dlr.de/89380/
Document Type:Conference or Workshop Item (Speech)
Title:Tip Vortex Dynamics of a Pitching Rotor Blade Tip Model
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wolf, Christian C.christian.wolf (at) dlr.deUNSPECIFIED
Merz, Christoph B.christoph.merz (at) dlr.deUNSPECIFIED
Richter, Kaikai.richter (at) dlr.deUNSPECIFIED
Raffel, Markusmarkus.raffel (at) dlr.deUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2015-1492
Page Range:pp. 1-7
Series Name:Conference Proceedings online
Keywords:Tip Vortex, Dynamic Stall, High-Speed PIV
Event Title:53rd AIAA Aerospace Sciences Meeting
Event Location:Kissimmee, FL, USA
Event Type:international Conference
Event Dates:05. - 09. Jan. 2015
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Micknaus, Ilka
Deposited On:25 Feb 2015 15:26
Last Modified:25 Feb 2015 15:26

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