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Unsteady Surface Pressures and Airload of a Pitching Airfoil

Worasinchai, Supakit; Ingram, Grant; Dominy, Robert


Supakit Worasinchai

Robert Dominy


This paper presents unsteady surface pressure variations of a symmetrical NACA0012 section commonly used on Vertical-axis wind turbine blades. The section was tested at a Reynolds number of 90,000, mean incidence angles of 15 and -15, and a reduced frequency of 0.20. The experimental results show that the airfoil motion had significant effects on surface pressure distribution over the airfoil, leading to a formation and shedding of an energetic leading edge vortex which strongly affects the overall airload over the incidence range.


Worasinchai, S., Ingram, G., & Dominy, R. (2013). Unsteady Surface Pressures and Airload of a Pitching Airfoil. Energy Procedia, 34, 407-416.

Journal Article Type Article
Publication Date Jan 1, 2013
Deposit Date Aug 7, 2013
Journal Energy Procedia
Print ISSN 1876-6102
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 34
Pages 407-416
Keywords Airfoil, Dynamic performance characteristics, Low Reynolds number, Vortex formation.