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Tidal stream turbines: With or without a Gearbox?
Ocean Engineering, 2018Abstract This paper proposes a review-based comparative study addressing the critical issue of tidal stream turbine drivetrain options. Indeed, tidal stream turbines are still in development stages with few industrial project deployments. Their technology is not as mature as wind turbine technology, while facing immersion constraints where have to ...
Khalil Touimi, M. Benbouzid, P. Tavner
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Non-dimensional scaling of tidal stream turbines
Energy, 2012The impact of local depth-wise velocity profiles on tidal turbine performance is important. Although the use of standard power laws for predicting velocity profiles is common, these laws may underestimate the magnitude of the depth-wise velocity shear and power attenuation.
A. Mason-Jones +9 more
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Reliability of tidal stream turbine blades
2011Tidal stream turbines are a new technology for extracting kinetic energy from tidal currents. A number of different concepts of such devices have been proposed up to now and the most popular of them is a horizontal-axis turbine with propeller-type blades.
Val, D. V., Chernin, L.
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Unsteady gust response of tidal stream turbines
2014 Oceans - St. John's, 2014This paper investigates the limitations of 2D linear unsteady aerofoil theory for modelling the unsteady gust response of tidal stream turbines. The work is motivated by the fact that accurate unsteady load prediction is required to determine turbine life.
Carl L. Sequeira, Robert J. Miller
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International Scientific Conference on Power and Electrical Engineering of Riga Technical University
Tidal-stream electricity generation is in its infancy when compared to the wind turbine sector. Tidal-stream energy is predictable and can extract more energy per media unit due to the difference between wind and seawater densities.
Michael Barrett
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Tidal-stream electricity generation is in its infancy when compared to the wind turbine sector. Tidal-stream energy is predictable and can extract more energy per media unit due to the difference between wind and seawater densities.
Michael Barrett
semanticscholar +1 more source
, 2020
We simulate two back-to-back full-scale tidal turbines using an in-house computational free-surface flow code. We briefly present the mathematical formulation of the computational framework.
Jinhui Yan +4 more
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We simulate two back-to-back full-scale tidal turbines using an in-house computational free-surface flow code. We briefly present the mathematical formulation of the computational framework.
Jinhui Yan +4 more
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Fast R-CNN-based Detection and Coverage Estimation of Biofouling on Tidal Stream Turbines
Annual Conference of the IEEE Industrial Electronics SocietyBiofouling poses a significant challenge to the efficiency and performance of tidal stream turbines. This study proposes a novel approach utilizing Fast R-CNN for biofouling detection and coverage estimation in tidal stream turbines.
Haroon Rashid +5 more
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A Review on the Research Progress of the Tidal Stream Turbines
2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE), 2020Tidal current energy is a rich Marine resource. Compared with other energy sources, it is predictable and the flow rate is stable. For horizontal axis tidal turbine, this paper expounds the development of horizontal axis tidal turbine from scientific ...
Xu Junhui, Yu Tianchen, Jiang Tao
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Numerical Investigation of an Optimised Horizontal Axis Tidal Stream Turbine
Volume 10: Ocean Renewable Energy, 2019Abstract A tidal stream turbine was designed using one of the optimised hydrofoils, whose lift-to-drag ratio at an angle of attack of 5.2 degrees was 4.5% higher than that of the reference hydrofoil. The incompressible Reynolds-averaged Navier Stokes equations in steady state were solved using k-ω (SST) turbulence model for the reference
Sheshtawy, Hassan El +3 more
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Reliability analysis of rotor blades of tidal stream turbines
Reliability Engineering & System Safety, 2014Abstract Tidal stream turbines are used for converting kinetic energy of tidal currents into electricity. There are a number of uncertainties involved in the design of such devices and their components. To ensure safety of the turbines these uncertainties must be taken into account.
Val, Dimitri V. +2 more
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