Review on the blade design technologies of tidal current turbine

Li, Wei; Zhou, Hongbin; Liu, Hongwei; Lin, Yan; Xu, Quankun

doi:10.1016/j.rser.2016.05.017

Cited by 68 publications

(29 citation statements)

References 22 publications

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“…Vazquez et al [5] acknowledged that a large portion of their LCOE are associated with the turbine's initial one-off manufacturing costs (capital expenditure, CAPEX) and their ongoing maintenance costs (operating expenditures, OPEX). A strategy to reduce the LCOE is to reduce periodic and unscheduled maintenance operations for instance by enhancing the structural response of the device to extreme or fatigue loads and to avoid sudden structural collapse [6]. At present, the knowledge of the long-term effects of hydrodynamic loads on tidal turbines is limited with only a few studies that focused on these matters [7].…”

Section: Introductionmentioning

confidence: 99%

“…how the performance of the turbine varies depending on its proximity to the free surface, the oncoming velocity or its rotor yaw angle [17][18][19]. The first tidal current turbines were manufactured considering wind turbine rotors as reference point as this is a well-developed technology, although tidal turbine rotors adopted shorter and thicker blades as water forces are much higher than those of wind [6]. The preliminary experiments evidenced that tidal current turbines are a promising novel technology with the tested designs reaching power coefficients above 40%, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…At present, a significant challenge for tidal turbine developers is improving the structural design of tidal turbines, e.g. blade thickness or material stiffness, ensuring their long-term integrity avoiding sudden structural failure [6,7,23]. An intrinsic effect of turbulence together with the periodic nature of the tides is the repetitive action of dynamic structural loads which can cause fatigue failure and reduces their survivability.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Environmental Turbulence on the Performance and Loadings of a Tidal Stream Turbine

Ouro

Stoesser

2018

Flow Turbulence Combust

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A large-eddy simulation (LES) of a laboratory-scale horizontal axis tidal stream turbine operating over an irregular bathymetry in the form of dunes is performed. The Reynolds number based on the approach velocity and the chord length of the turbine blades is approximately 60,000. The simulated turbine is a 1:30 scale model of a full-scale prototype and both turbines operate at very similar tip-speed ratio of λ ≈ 3. The simulations provide quantitative evidence of the effect of seabed-induced turbulence on the instantaneous performance and structural loadings of the turbine revealing how large-scale, energetic turbulence structures affect turbine performance and bending moments of the rotor blades. The data analysis shows that wake recovery is notably enhanced in comparison to the same turbine operating above a flat-bed and this is due to the higher turbulence levels generated by the dune. The results demonstrate the need for studying in detail the flow and turbulence characteristics at potential tidal turbine deployment sites and to incorporate observed large-scale velocity and pressure fluctuations into the structural design of the turbines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Environmental Turbulence on the Performance and Loadings of a Tidal Stream Turbine

Ouro

Stoesser

2018

Flow Turbulence Combust

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“…The tower is a cone-shaped steel structure with four segments mounted on each other by screws and flanges. The tower design includes the following main steps [15]:…”

Section: Ocean Wind Turbine Tower Technologymentioning

confidence: 99%

Ocean Wind Energy Technologies in Modern Electric Networks: Opportunity and Challenges

Gandoman¹,

Ahmadi²,

Aleem³

et al. 2020

Advances in Modelling and Control of Wind and Hydrogenerators

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Wind energy is one of the most important sources of energy in the world. In recent decades, wind as one of the massive marine energy resources in the ocean to produce electricity has been used. This chapter introduces a comprehensive overview of the efficient ocean wind energy technologies, and the global wind energies in both offshore and onshore sides are discussed. Also, the classification of global ocean wind energy resources is presented. Moreover, different components of a wind farm offshore as well as the technologies used in them are investigated. Possible layouts regarding the foundation of an offshore wind turbine, floating offshore, as well as the operation of wind farms in the shallow and deep location of the ocean are studied. Finally, the offshore wind power plant challenges are described.

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“…Important improvements in BEMT blade design approaches for wind turbines [11,12], propellers [13] and hydrokinetic devices [14][15][16][17][18] have been explored in the literature, and some relevant ad hoc corrections associated with complex physical flow features (wake hydrodynamics, tip 3D effects, cavitation, etc.) have been proposed and integrated in BEMT approach.…”

Section: Introductionmentioning

confidence: 99%

On the design of propeller hydrokinetic turbines: the effect of the number of blades

Brasil

Mendes

Wirrig

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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A design study of propeller hydrokinetic turbines is explored in the present paper, where the optimized blade geometry is determined by the classical Glauert theory applicable to the design of axial flow turbines (hydrokinetic and wind turbines). The aim of the present study is to evaluate the optimized geometry for propeller hydrokinetic turbines, observing the effect of the number of blades in the runner design. The performance of runners with different number of blades is evaluated in a specific low-rotational-speed operating conditions, using blade element momentum theory (BEMT) simulations, confirmed by measurements in wind tunnel experiments for small-scale turbine models. The optimum design values of the power coefficient, in the operating tip speed ratio, for two-, three-and four-blade runners are pointed out, defining the best configuration for a propeller 10 kW hydrokinetic machine.

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Review on the blade design technologies of tidal current turbine

Cited by 68 publications

References 22 publications

Impact of Environmental Turbulence on the Performance and Loadings of a Tidal Stream Turbine

Impact of Environmental Turbulence on the Performance and Loadings of a Tidal Stream Turbine

Ocean Wind Energy Technologies in Modern Electric Networks: Opportunity and Challenges

On the design of propeller hydrokinetic turbines: the effect of the number of blades

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