Effect of Airfoil Concavity on Wind Turbine Blade Performances
Joint Authors
Ma, Jian-long
Wang, Jian-wen
Duan, Yafan
Zhao, Ming
Lv, Wenchun
Meng Ke, Qilao
Ren, Yongfeng
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-22
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Although the optimization of wind turbine blade aerodynamic performance has achieved fruitful results, whether airfoil concavity, an important method for preventing flow separation, is also feasible for improving the aerodynamic performance has not been confirmed scientifically.
Thus, we selected the blade of a small horizontal-axis wind turbine as a research model and proposed an optimization method based on airfoil concavity near the trailing edge of the blade suction surface.
The experimental results showed that airfoil concavity improved blade aerodynamic performance by 3–15%.
Subsequently, its effects on the sound pressure level within the wake flow field were investigated using an acoustic array, and the results suggested that the sound pressure level was reduced by 9.6–15.8%.
Lastly, a modal test of the rotor blade was conducted.
Although the natural frequencies of the 1st and 2nd order vibrations had hardly changed, their vibrational stiffness were increased by 7 and 4.9%, respectively, which indicated that airfoil concavity significantly improved structural robustness.
American Psychological Association (APA)
Ma, Jian-long& Duan, Yafan& Zhao, Ming& Lv, Wenchun& Wang, Jian-wen& Meng Ke, Qilao…[et al.]. 2019. Effect of Airfoil Concavity on Wind Turbine Blade Performances. Shock and Vibration،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211422
Modern Language Association (MLA)
Ma, Jian-long…[et al.]. Effect of Airfoil Concavity on Wind Turbine Blade Performances. Shock and Vibration No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1211422
American Medical Association (AMA)
Ma, Jian-long& Duan, Yafan& Zhao, Ming& Lv, Wenchun& Wang, Jian-wen& Meng Ke, Qilao…[et al.]. Effect of Airfoil Concavity on Wind Turbine Blade Performances. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211422
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211422