Study on the impact of wave characteristics on the performance of full-scale tidal turbine

Si, Xiancai; Xie, Yingchun; Tan, Junzhe; Yuan, Peng; Wang, Shujie; Liu, Yonghui; Liu, Xiaodong

doi:10.1016/j.oceaneng.2024.117800

Ocean Engineering

2024

DOI: 10.1016/j.oceaneng.2024.117800

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Study on the impact of wave characteristics on the performance of full-scale tidal turbine

Xiancai Si,

Yingchun Xie,

Junzhe Tan

et al.

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2024

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Cited by 2 publications

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Review of research on wake characteristics in horizontal-axis tidal turbines

Liu,

Lu,

Ren

et al. 2024

Ocean Engineering

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Review of research on wake characteristics in horizontal-axis tidal turbines

Liu,

Lu,

Ren

et al. 2024

Ocean Engineering

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Hydrodynamic characteristics of a ducted tidal turbine in yawed conditions

Liu,

Feng,

Qian

et al. 2024

Physics of Fluids

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In marine environments, tidal currents exhibit periodic changes in both direction and velocity. Consequently, tidal turbines often operate under yawed conditions. While conventional horizontal-axis turbines show decreased performance and undergo periodic load fluctuations due to blade rotation when yawed, research on the effects of yaw on ducted turbines has been sparse, leaving the underlying impact mechanisms poorly understood. This paper presents a three-dimensional hydrodynamic model of a ducted turbine, developed using the computational fluid dynamics method and validated through flume experiments. The hydrodynamic characteristics of the ducted turbine when operating under yawed conditions are analyzed using large eddy simulation. The findings indicate that yaw does not alter the optimal rotational speed of the ducted turbine. The turbine performance remains superior to non-yawed conditions up to a yaw angle of approximately 7°, peaking with a 1% improvement at 5°, but deteriorates beyond this point, declining by 1.5% at a yaw angle of 10°. In addition, yaw causes a deflection in the wake of the ducted turbine. This deflection increases with the yaw angle, reaching its maximum at a yaw angle of 10° with an angle of about 3.4°, before diminishing. The duct structure significantly influences this deflection, while rotor rotation has a minimal impact on wake deflection.

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Study on the impact of wave characteristics on the performance of full-scale tidal turbine

Cited by 2 publications

References 32 publications

Review of research on wake characteristics in horizontal-axis tidal turbines

Review of research on wake characteristics in horizontal-axis tidal turbines

Hydrodynamic characteristics of a ducted tidal turbine in yawed conditions

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