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Investigations of HAWT Airfoil Shape Characteristics and 3D Rotational Augmentation Sensitivity Toward the Aerodynamic Performance Improvement
This study investigates the impacts of dierent airfoil shapes on the 3D augmentation
and power production of horizontal axis wind turbines (HAWTs). The aerodynamic eect from
changing the leading and trailing edge of the airfoil is the emphasis of the research. Varied power
produced from modifying sensitivity on 3D augmentations, caused by revamping airfoil shapes, are
shown. The 3D correction law, considering the chord to radius ratio and the blades’ pitch angle in
the rotation, is applied to the airfoil lift coecients. The blade element method (BEM) embedded
in the software Qblade with modified lift coecients simulates the power productions of three
wind turbines from these airfoils. The comparisons of the boundary layer characteristics, sectional
forces, and inflow angle of the blade sections are calculated. The k-omega SST turbulence model in
OpenFoam visualizes the stall and separation of the blades’ 2D section. The airfoils with a rounded
leading edge show a reduced stall and separated flow region. The power production is 2.3 times
higher for the airfoil constructed with a more rounded leading edge S809r and two times higher for
the airfoil S809gx of the symmetric structure.
Investigations of HAWT Airfoil Shape Characteristics and 3D Rotational Augmentation Sensitivity Toward the Aerodynamic Performance Improvement
This study investigates the impacts of dierent airfoil shapes on the 3D augmentation
and power production of horizontal axis wind turbines (HAWTs). The aerodynamic eect from
changing the leading and trailing edge of the airfoil is the emphasis of the research. Varied power
produced from modifying sensitivity on 3D augmentations, caused by revamping airfoil shapes, are
shown. The 3D correction law, considering the chord to radius ratio and the blades’ pitch angle in
the rotation, is applied to the airfoil lift coecients. The blade element method (BEM) embedded
in the software Qblade with modified lift coecients simulates the power productions of three
wind turbines from these airfoils. The comparisons of the boundary layer characteristics, sectional
forces, and inflow angle of the blade sections are calculated. The k-omega SST turbulence model in
OpenFoam visualizes the stall and separation of the blades’ 2D section. The airfoils with a rounded
leading edge show a reduced stall and separated flow region. The power production is 2.3 times
higher for the airfoil constructed with a more rounded leading edge S809r and two times higher for
the airfoil S809gx of the symmetric structure.
Investigations of HAWT Airfoil Shape Characteristics and 3D Rotational Augmentation Sensitivity Toward the Aerodynamic Performance Improvement
Youjin Kim (author) / Galih Bangga (author) / Antonio Delgado (author)
2020
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
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