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Physical Modelling of Tidal Stream Turbine Wake Structures under Yaw Conditions

open access: yesEnergies, 2023
Tidal stream turbines may operate under yawed conditions due to variability in ocean current directions. Insight into the wake structure of yawed turbines can be essential to ensure efficient tidal stream energy extraction, especially for turbine arrays ...
Can Zhang   +5 more
doaj   +2 more sources

CFD Simulations of the Effects of Wave and Current on Power Performance of a Horizontal Axis Tidal Stream Turbine

open access: yesJournal of Marine Science and Engineering, 2023
To ensure the long-term reliability of tidal stream turbines, waves and currents must be considered during the design phase. In this paper, a three-bladed horizontal axis turbine with a diameter of 0.9 m was used as the baseline model.
Bohan Liu, Sunho Park
doaj   +2 more sources

Fractional-Order PI Control of DFIG-Based Tidal Stream Turbine [PDF]

open access: yesJournal of Marine Science and Engineering, 2020
This study mainly investigates the current and speed control strategies of a doubly-fed induction generator (DFIG), which is applied to a tidal stream turbine (TST).
Hao Chen   +7 more
doaj   +4 more sources

Investigating Tidal Stream Turbine Array Performance Considering Effects of Number of Turbines, Array Layouts, and Yaw Angles

open access: yesJournal of Marine Science and Engineering
The performance of a tidal stream turbine array can be affected by numerous factors. Investigating the connection between array power production and these factors will be helpful in improving the development of tidal stream energy.
Can Zhang   +6 more
doaj   +2 more sources

Experimental Studies of Turbulent Intensity around a Tidal Turbine Support Structure [PDF]

open access: yesEnergies, 2017
Tidal stream energy is a low-carbon energy source. Tidal stream turbines operate in a turbulent environment, and the effect of the structure between the turbine and seabed on this environment is not fully understood.
Stuart Walker, Lorenzo Cappietti
doaj   +6 more sources

Tidal Stream Turbine Biofouling Detection and Estimation: A Review-Based Roadmap

open access: yesJournal of Marine Science and Engineering, 2023
In the context of harvesting tidal stream energy, which is considered a promising source of renewable energy due to its high energy density, stability, and predictability, this paper proposes a review-based roadmap investigating the use of data-driven ...
Haroon Rashid   +4 more
doaj   +2 more sources

Designing multi-rotor tidal turbine fences [PDF]

open access: yesInternational Marine Energy Journal, 2018
An embedded Reynolds-Averaged Navier-Stokes blade element actuator disk model is used to investigate the hydrodynamic design of tidal turbines and their performance in a closely spaced cross-stream fence. Turbines designed for confined flows are found to
C. R. Vogel, R. H. J. Willden
doaj   +3 more sources

Sheared turbulent flows and wake dynamics of an idled floating tidal turbine [PDF]

open access: yesNature Communications
Ocean energy extraction is on the rise. While tides are the most predictable amongst marine renewable resources, turbulent and complex flows still challenge reliable tidal stream energy extraction and there is also uncertainty in how devices change the ...
Lilian Lieber   +3 more
doaj   +2 more sources

Comparative Life Cycle Assessment of tidal stream turbine blades

open access: yesInternational Marine Energy Journal, 2022
Renewable energy allows electricity generation with lower environmental and resource impact than generation from fossil fuels. However, the manufacture, use and ultimate disposal of the equipment used to capture this energy has an environmental impact ...
Stuart Robert John Walker   +2 more
doaj   +2 more sources

Mathematical analysis of the turbine coefficient of performance for tidal stream turbines [PDF]

open access: yes, 2014
Unregulated water currents such as tides and ocean currents include energy that could be utilized for electricity production. These currents can be seen as dead bodies of water with potential energy, driven by gravity or alive moving with a kinetic ...
Abdel Aleem, SHE, Ibrahim, AM, Zobaa, AF
core   +2 more sources

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