A generalized method to extend airfoil polars over the full range of angles of attack

Lorenzo Battisti, Luca Zanne, Marco Raciti Castelli, Alessandro Bianchini and Alessandra Brighenti

Renewable Energy, 2020, vol. 155, issue C, 862-875

Abstract: The accurate prediction of airfoil polars over the whole range of angles of attack and for different Reynolds numbers is pivotal to ensure an accurate prediction of wind turbine aerodynamic performance. In particular, modeling correctly the deep-stall and post-stall airfoil behavior is essential to reproduce reliable power and thrust curves for high wind conditions, especially as far as stall-controlled wind turbines are concerned. This need is even more urgent in vertical-axis wind turbines, in which the airfoils do experience a continuous variation of the angle of attack, exceeding the stall limit even in normal operating points.

Keywords: Airfoil polars; Post-stall behavior; Lift and drag coefficients; Stall-controlled wind turbine; Vertical-axis wind turbine; Vertical-axis water turbine (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:155:y:2020:i:c:p:862-875

DOI: 10.1016/j.renene.2020.03.150

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