EFFECTS OF BLADE TIP TYPES ON PERFORMANCE AND WAKE FLOW OF TIDAL TURBINES

Dong Xia; Si Xiancai; Yuan Peng; Tan Junzhe; Liu Yonghui; Wang Shujie

doi:10.19912/j.0254-0096.tynxb.2022-0317

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 542-548. DOI: 10.19912/j.0254-0096.tynxb.2022-0317

EFFECTS OF BLADE TIP TYPES ON PERFORMANCE AND WAKE FLOW OF TIDAL TURBINES

Dong Xia¹, Si Xiancai^1,2, Yuan Peng^1,2, Tan Junzhe^1,2, Liu Yonghui^1,3, Wang Shujie^1,2

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Abstract

In this paper, the effects of tip optimization treatment on hydrodynamic performance, wake recovery and tip vortex control of horizontal axis current turbine are studied by means of experiment and simulation.The results show that the blade tip optimization model can effectively reduce the return flow from the pressure to the suction surface at the tip of the blade.It can greatly reduce the overall strength of the blade tip vortex, which has a positive effect on accelerating the recovery of the turbine's wake and improving the hydrodynamic performance of the turbine.Compared with the basic blade turbine model, the power coefficient of the blade tip optimized turbine model is increased by 1.92%.

Key words

tip vortex / tidal current energy / flume experiment / blade optimization

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Dong Xia, Si Xiancai, Yuan Peng, Tan Junzhe, Liu Yonghui, Wang Shujie. EFFECTS OF BLADE TIP TYPES ON PERFORMANCE AND WAKE FLOW OF TIDAL TURBINES[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 542-548 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0317

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