INFLUENCE OF DIFFERENT VORTEX GENERATOR PARAMETERS ON HYDRODYNAMIC CHARACTERISTICS OF TIDAL CURRENT TURBINE HYDROFOIL

Zhe Haonan; Liu Yonghui; Tan Junzhe; Si Xiancai; Yuan Peng; Wang Shujie

doi:10.19912/j.0254-0096.tynxb.2021-0763

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 350-356. DOI: 10.19912/j.0254-0096.tynxb.2021-0763

INFLUENCE OF DIFFERENT VORTEX GENERATOR PARAMETERS ON HYDRODYNAMIC CHARACTERISTICS OF TIDAL CURRENT TURBINE HYDROFOIL

Zhe Haonan¹, Liu Yonghui^1,2, Tan Junzhe^1,2, Si Xiancai^1,2, Yuan Peng^1,2, Wang Shujie^1,2

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Abstract

In this paper, the flow control theory of vortex generators（VGs） is introduced into the field of turbine blade design, and the inhibition mechanism and hydrodynamic characteristics of vortex generators（VGs） on flow separation effect of tidal current turbine hydrofoil are studied. NACA4418 hydrofoil is taken as the research object, the three-dimensional models with VGs and without VGs are established respectively. The effects of different parameters of VGs, such as VG arrangement, spacing, height and length, on the hydrodynamic performance of NACA4418 hydrofoil are studied by CFD method. The results show that VGs can effectively suppress the flow separation and improve the maximum lift coefficient of hydrofoil. The performance of forward VG arrangement is better than that of the reverse arrangement. The best improvement effect is obtained when the distance between VGs is 25 mm, the height is 5 mm and the length is 17 mm. Although the maximum drag coefficient of each hydrofoil with VGs is increased by about 5%, the overall performance of hydrofoil is increased. The accuracy of the simulation results is verified by flume tests. In addition, two-dimensional flow field distribution around hydrofoil section and static pressure distribution on VG's backflow side are studied to further reveal the mechanism of VGs.

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Zhe Haonan, Liu Yonghui, Tan Junzhe, Si Xiancai, Yuan Peng, Wang Shujie. INFLUENCE OF DIFFERENT VORTEX GENERATOR PARAMETERS ON HYDRODYNAMIC CHARACTERISTICS OF TIDAL CURRENT TURBINE HYDROFOIL[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 350-356 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0763

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