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- Title
Function of the turbo‐sail airfoil applied to the Darrieus wind turbine.
- Authors
Ono, Yoshimichi; Sayama, Ryosuke; Murai, Yuichi; Park, Hyun Jin; Tasaka, Yuji
- Abstract
The use of a turbo‐sail airfoil to improve the power generation of a Darrieus wind turbine was examined. The turbo‐sail airfoil comprises a symmetric blade from which a high‐speed tangential jet is produced to suppress flow separation. For a steady angle of attack, we experimentally confirmed an anti‐stall function of the airfoil at an angle of attack up to and exceeding 30°. Considering the case of the rotation of a single blade of a Darrieus wind turbine, the flow field was replaced with a non‐separated stream around the airfoil particularly even at a tip‐speed ratio lower than 3. The pressure field and local lift‐to‐drag ratio measured by particle image velocimetry quantitatively supported the expected anti‐stall function. Improvements in the torque and power coefficient were estimated from measurements considering the external power consumed in supplying the jet.
- Subjects
AEROFOILS; WIND turbines; PARTICLE image velocimetry; WIND turbine blades; FLOW separation
- Publication
Wind Energy, 2024, Vol 27, Issue 5, p483
- ISSN
1095-4244
- Publication type
Article
- DOI
10.1002/we.2897