Structural performance of composite tidal turbine blades

Gonabadi, Hassan; Oila, Adrian; Yadav, Arti; Bull, Steve

doi:10.1016/j.compstruct.2021.114679

Cited by 24 publications

(8 citation statements)

References 32 publications

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“…The erosion test platform as illustrated in Figure 5 was used. An impact velocity of 4.7 m/s was used, based on the hydrodynamic design of tidal turbine blades implemented in other work, 34 measured with a PEAKMETER anemometer model PM6252B, a 10 mm in diameter nozzle for outflow of sand, (standard measurement of the platform), a separation distance between the nozzle and the sample of 5 mm, an impact angle of 90°C of the sand flow on the sample and a flow pressure average of 4.5 bar (450 kPa), recorded with a PROBLOCK manometer and an average ambient temperature of 22°C, were considered. Initially, the samples were washed with water mixed with a few drops of liquid detergent for 5 min at room temperature in a COLE PARMER brand ultrasonic bath (model 8848), then they were dried with absorbent paper and weighed on an OHAUS analytical balance to obtain the initial mass.…”

Section: Methodsmentioning

confidence: 99%

Effect of seawater aging on the erosive wear response of aramid fiber reinforced composites

Eslava-Hernández,

Rodríguez-González,

Rubio-González

et al. 2024

Journal of Composite Materials

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This study presents the effect caused by the saline environment (artificial seawater) on the physical and tribological properties of laminated composite materials reinforced with aramid fibers when they are subjected to erosive wear by sand particles. Composite materials made by epoxy resin and reinforced with glass fiber, carbon fiber and hybrid fiber (aramid with carbon) were studied. The laminates were superficially reinforced with layers of Kevlar fiber and prepared by the vacuum-assisted resin infusion process. The samples were subjected to a seawater accelerated aging process at 70°C for 1122 h. To reproduce erosive wear conditions of marine structural components, sea sand was used as solid particle under conditions of 4.5 bar of pressure, impact speed of 4.7 m/s and impact angle of 90°. The results showed that aged materials absorb more impact energy with respect to unaged counterparts, causing less material loss and a less depth in the wear track. The information generated by this research work may serve for the design and durability analysis of marine structures such as tidal turbine blades.

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Section: Methodsmentioning

confidence: 99%

Effect of seawater aging on the erosive wear response of aramid fiber reinforced composites

Eslava-Hernández,

Rodríguez-González,

Rubio-González

et al. 2024

Journal of Composite Materials

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“…Notably, a damage mechanics approach was used for tidal blade design [15], and a PreComp and finite-element analysis (FEA) process was employed for blade design [16]. A study utilizing a 1 m blade (of a similar scale to the MHKF1 blade) was also conducted, which involved comparing FEA results to digital image correlation from blade structural testing [17,18]. The project presented herein involves a comprehensive five-step process aimed at the design, manufacturing, and testing of an open-source composite blade.…”

Section: Blade Design and Analysismentioning

confidence: 99%

Design, Manufacture and Testing of an Open-Source Benchmark Composite Hydrokinetic Turbine Blade

González-Montijo,

Murray,

Beach

et al. 2023

Proc. EWTEC

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In a trend towards clean energy alternatives, recent years have seen great strides in the marine energy space. This has resulted in a pressing need for the design, development, and validation of novel energy harvesting technologies such as hydrokinetic devices, which capture kinetic energy from waves, tides, and currents. However, these devices span numerous concepts and designs that often lack solid benchmark research that can be freely referenced. This work focuses on the design process of an open-source composite hydrokinetic turbine blade for a three-bladed marine turbine rotor assembly with a diameter of 2.5 m. The proposed blade consists of two structural composite skins that are bonded with an adhesive and filled with a foam core. This study will explore and contrast the efficiency and resolution of low-fidelity rapid design methodologies and comprehensive high-fidelity approaches for the blade design, modeling, and analysis efforts, a key objective in this research. Blade hydrodynamic loads were modeled and applied to finite-element blade models to study deformations and potential failure. Ongoing efforts will result in blade manufacture and structural testing at the National Renewable Energy Laboratory. In future work, multiple blades will be deployed at the Living Bridge site at the University of New Hampshire and will be compared to rigid aluminum blades of the same geometry, developed by Sandia National Laboratories. Ultimately, this research will lay foundational groundwork for researchers and manufacturers, establishing a baseline composite blade design that will serve as a benchmark in the development of future hydrokinetic turbine blades.

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“…For example, to sustain higher loads in water, a wind turbine design with a large flange may not be feasible for a hydrokinetic turbine. Additionally, a hydrokinetic turbine blade requires a lower aspect ratio and larger sectional thickness to sustain the higher loads in water 38 .…”

Section: Introductionmentioning

confidence: 99%

CFD-based design optimization of ducted hydrokinetic turbines

Park,

Knight,

Liao

et al. 2023

Sci Rep

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Hydrokinetic turbines extract kinetic energy from moving water to generate renewable electricity, thus contributing to sustainable energy production and reducing reliance on fossil fuels. It has been hypothesized that a duct can accelerate and condition the fluid flow passing the turbine blades, improving the overall energy extraction efficiency. However, no substantial evidence has been provided so far for hydrokinetic turbines. To investigate this problem, we perform a CFD-based optimization study with a blade-resolved Reynolds-averaged Navier–Stokes (RANS) solver to explore the design of a ducted hydrokinetic turbine that maximizes the efficiency of energy extraction. A gradient-based optimization approach is utilized to effectively deal with the high-dimensional design space of the blade and duct geometry, with gradients being calculated through the adjoint method. The final design is re-evaluated through higher-fidelity unsteady RANS (URANS) simulations. Our optimized ducted turbine achieves an efficiency of about 54% over a range of operating conditions, higher than the typical 46% efficiency of unducted turbines.

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Structural performance of composite tidal turbine blades

Cited by 24 publications

References 32 publications

Effect of seawater aging on the erosive wear response of aramid fiber reinforced composites

Effect of seawater aging on the erosive wear response of aramid fiber reinforced composites

Design, Manufacture and Testing of an Open-Source Benchmark Composite Hydrokinetic Turbine Blade

CFD-based design optimization of ducted hydrokinetic turbines

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