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Leading Edge Vortex Development on Pitching and Surging Airfoils: A Study of Vertical Axis Wind Turbines

Dunne, Reeve and Tsai, Hsieh-Chen and Colonius, Tim and McKeon, Beverley J. (2016) Leading Edge Vortex Development on Pitching and Surging Airfoils: A Study of Vertical Axis Wind Turbines. In: Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015). Springer Proceedings in Physics. No.185. Springer , Stockholm, Sweden, pp. 581-587. ISBN 9783319306001.

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Vertical axis wind turbine blades undergo dynamic stall due to the large angle of attack variation they experience during a turbine rotation. Particle image velocimetry on a pitching and surging airfoil was used to perform time resolved measurements at blade Reynolds numbers near turbine operating conditions of 10^5 . These experiments were compared to simulations performed in the rotating turbine frame as well as the linear, experimental, frame at a Reynolds number of 10^3 to investigate rotational and Reynolds number effects. The flow was shown to develop similarly prior to separation, but the kinematics of vortices shed post separation were reference frame dependent.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Colonius, Tim0000-0003-0326-3909
McKeon, Beverley J. 0000-0003-4220-1583
Additional Information:© 2016 Springer. First Online: 19 July 2016. This work was supported by the Gordon and Betty Moore Foundation through grant GBMF#2645 to the California Institute of Technology.
Funding AgencyGrant Number
Gordon and Betty Moore FoundationGBMF2645
Subject Keywords:Reynolds Number; Particle Image Velocimetry; Turbine Rotation; Lead Edge Vortex; Dynamic Mode Decomposition
Series Name:Springer Proceedings in Physics
Issue or Number:185
Record Number:CaltechAUTHORS:20190712-112320819
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97101
Deposited By: Melissa Ray
Deposited On:15 Jul 2019 16:47
Last Modified:03 Oct 2019 21:28

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