The influence of oscillating trailing-edge flap on the dynamic stall control of a pitching wind turbine airfoil

2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Mahbod Seyednia ◽  
Mehran Masdari ◽  
Shidvash Vakilipour
Keyword(s):  
Wind Turbine ◽  
Dynamic Stall ◽  
Trailing Edge ◽  
Wind Turbine Airfoil ◽  
Trailing Edge Flap ◽  
Stall Control

Influence of Flap Deflection Angle on Wind Turbine Airfoil with Trailing Edge Flaps

2014 ◽  
Vol 977 ◽  
pp. 222-227
Author(s):  
Ya Lei Jia ◽  
Zhong He Han ◽  
Fu You Li ◽  
Ya Kai Bai ◽  
Ji Xuan Wang
Keyword(s):  
Wind Turbine ◽  
Deflection Angle ◽  
Aerodynamic Performance ◽  
Main Body ◽  
Trailing Edge ◽  
Trailing Edge Flaps ◽  
Wind Turbine Airfoil ◽  
Trailing Edge Flap ◽  
Flap Deflection ◽  
Drag Ratio

To improve the ability of capturing the wind energy of wind turbine and shorten the design period is of great importance to designing wind turbine blade. The article established S809 airfoil model with trailing edge flaps, The gap of the frontal subject and trailing edge flap adopt uniform gap structure, this structure will reduce the influence of the gap on aerodynamic characteristics.Using the k-ω Two equation turbulence model , the article calculated aerodynamic performance of S809 with 10% chord length trailing edge flaps under different deflecting angles. Results show that gap between the main body and trailing edge flap has little effect on airfoil aerodynamic performance, however, the deflection Angle of Trailing edge flap have great affect on airfoil aerodynamic performance, when deflection Angle of trailing edge flap is 14 ° degrees ,the lift-to-drag ratio is the largest.

scholarly journals Dynamic Stall Control on the Wind Turbine Airfoil via a Co-Flow Jet

Energies ◽  
2016 ◽  
Vol 9 (6) ◽  
pp. 429 ◽  
Author(s):  
He-Yong Xu ◽  
Chen-Liang Qiao ◽  
Zheng-Yin Ye
Keyword(s):  
Wind Turbine ◽  
Dynamic Stall ◽  
Wind Turbine Airfoil ◽  
Stall Control

scholarly journals Deep dynamic stall and active aerodynamic modification on a S833 airfoil using pitching trailing edge flap

2020 ◽  
pp. 0309524X2093885
Author(s):  
Farid Samara ◽  
David A Johnson
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Hysteresis Loops ◽  
Bending Moment ◽  
Dynamic Stall ◽  
Wind Turbine Blades ◽  
Trailing Edge ◽  
Load Fluctuation ◽  
Trailing Edge Flaps ◽  
Trailing Edge Flap

Due to the dynamic nature of the wind resource, wind turbine blades are subjected to significant variation in flow parameters, such as the angle of attack ([Formula: see text]). In some cases, the occurrence of dynamic stall on wind turbine blades causes load fluctuation which leads to material fatigue that tends to decrease the life span of the blades. In this study, the influence of a trailing edge flap on dynamic stall effects is investigated at high [Formula: see text] typical of wind turbines but atypical elsewhere. Pitching of the trailing edge flap was found to have a significant impact on the dynamic stall hysteresis loops responsible for the load fluctuation. Frequency analysis showed that the trailing edge flap was capable of reducing the cyclic fluctuation in the coefficient of lift and root bending moment by at least 26% and 24%, respectively. These results are a significant contribution toward understanding the advantages of using trailing edge flaps and how implementing them will reduce wind turbine blade load fluctuations.

Dynamic stall control of the wind turbine airfoil via single-row and double-row passive vortex generators

Energy ◽  
2019 ◽  
Vol 189 ◽  
pp. 116272 ◽  
Author(s):  
Chengyong Zhu ◽  
Jie Chen ◽  
Jianghai Wu ◽  
Tongguang Wang
Keyword(s):  
Wind Turbine ◽  
Vortex Generators ◽  
Dynamic Stall ◽  
Double Row ◽  
Single Row ◽  
Wind Turbine Airfoil ◽  
Stall Control

scholarly journals Controlling dynamic stall using vortex generators on a wind turbine airfoil

2021 ◽  
Author(s):  
D. De Tavernier ◽  
C. Ferreira ◽  
A. Viré ◽  
B. LeBlanc ◽  
S. Bernardy
Keyword(s):  
Wind Turbine ◽  
Vortex Generators ◽  
Dynamic Stall ◽  
Wind Turbine Airfoil

Dynamic Stall Control on a Vertical-Axis Wind Turbine Using Plasma Actuators

AIAA Journal ◽  
2014 ◽  
Vol 52 (2) ◽  
pp. 456-462 ◽  
Author(s):  
David Greenblatt ◽  
Amos Ben-Harav ◽  
Hanns Mueller-Vahl
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Dynamic Stall ◽  
Plasma Actuators ◽  
Vertical Axis Wind Turbine ◽  
Stall Control

Unsteady aerodynamic modeling and control of the wind turbine with trailing edge flap

2018 ◽  
Vol 10 (6) ◽  
pp. 063304 ◽  
Author(s):  
Wenguang Zhang ◽  
Yifeng Wang ◽  
Ruijie Liu ◽  
Haipeng Liu ◽  
Xu Zhang
Keyword(s):  
Wind Turbine ◽  
Trailing Edge ◽  
Modeling And Control ◽  
Aerodynamic Modeling ◽  
Unsteady Aerodynamic ◽  
Trailing Edge Flap ◽  
And Control

scholarly journals Aerodynamic Performance of Wind Turbine Airfoil DU 91-W2-250 under Dynamic Stall

2018 ◽  
Vol 8 (7) ◽  
pp. 1111 ◽  
Author(s):  
Shuang Li ◽  
Lei Zhang ◽  
Ke Yang ◽  
Jin Xu ◽  
Xue Li
Keyword(s):  
Wind Turbine ◽  
Aerodynamic Performance ◽  
Dynamic Stall ◽  
Wind Turbine Airfoil
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