INFLUENCE OF GEOMETRY PARAMETERS OF BLADE ENDPLATE ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINES

Weng Yujie; Miao Weipao; Liu Qingsong; Li Chun

doi:10.19912/j.0254-0096.tynxb.2024-2366

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (4) : 425-431. DOI: 10.19912/j.0254-0096.tynxb.2024-2366

INFLUENCE OF GEOMETRY PARAMETERS OF BLADE ENDPLATE ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINES

Weng Yujie¹, Miao Weipao^1,2, Liu Qingsong³, Li Chun^1,2

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Abstract

The paper uses the computational fluid dynamics method to study the endplate of three-dimensional vertical-axis wind turbine blade, and constructs nine types of endplates based on different offset distances and thicknesses, so as to analyze the influence of endplate geometric parameters on the overall performance of the blade. The results show that： with the increase of the offset distance and thickness of the end plate, the spanwise flow induced by the tip loss is effectively suppressed, which improves the aerodynamic force on the blade surface. However, the small-scale vortex structure formed on the surface of the endplate and the large-scale vortex structure of the wake induced by the endplate itself will aggravate the blade drag, resulting in a limited enhancement of the overall aerodynamic performance, and the thickness of the end plate is the main factor of the drag. When the offset distance is 0.18c, and the thickness is 0.01c, the power coefficient of the wind turbine is increased by 2.59%. The enhancement of the aerodynamic performance of the blade by the endplate is mainly concentrated in the phase angles of 60°~120 °and 240°~300 °, and the drag exists in most of the phase angles.

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vertical axis wind turbines / computational fluid dynamics / aerodynamics / end plate / tip loss / flow control

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Weng Yujie, Miao Weipao, Liu Qingsong, Li Chun. INFLUENCE OF GEOMETRY PARAMETERS OF BLADE ENDPLATE ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINES[J]. Acta Energiae Solaris Sinica. 2026, 47(4): 425-431 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2366

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