Results 41 to 50 of about 27,968 (220)

Surface Characterisation of Kolk-Boils within Tidal Stream Environments Using UAV Imagery

open access: yesJournal of Marine Science and Engineering, 2021
High-flow tidal stream environments, targeted for tidal turbine installations, exhibit turbulent features, at fine spatio-temporal scales (metres and seconds), created by site-specific topography and bathymetry. Bed-derived turbulent features (kolk-boils)
James Slingsby   +8 more
doaj   +1 more source

Validation of the actuator line method for simulating flow through a horizontal axis tidal stream turbine by comparison with measurements [PDF]

open access: yes, 2017
The purpose of the present work is to evaluate the capability of the Actuator Line Method (ALM) to simulate flow through a horizontal axis tidal stream turbine.
Baba-Ahmadi, Mohammad H., Dong, Ping
core   +3 more sources

Lifetime Analysis of IGBT Power Modules in Passively Cooled Tidal Turbine Converters

open access: yesEnergies, 2020
Thermal cycling is one of the major reasons for failure in power electronic converters. For submerged tidal turbine converters investigating this failure mode is critical in improving the reliability, and minimizing the cost of energy from tidal turbines.
Faisal Wani   +6 more
doaj   +1 more source

On the impact of waves and turbulence on the power fluctuations and wake structure of a tidal-stream turbine

open access: yesThe Physics of Fluids, 2023
Anticipating the power output of tidal-stream turbines (TSTs) is relevant for its technological advance and success. Therefore, it is important to clarify the behavior of TSTs under tidal-stream environments, which include both waves and currents.
E. Fernández-Rodríguez
semanticscholar   +1 more source

Flow curvature effects on dynamic behaviour of a novel vertical axis tidal current turbine: numerical and experimental analysis [PDF]

open access: yes, 2005
The paper deals with performances analysis of vertical axis turbine to exploit tidal marine currents. Flow curvature effects on performences of a novel vertical axis turbine have been investuigated. It has been shown that the flow curvature effect allows
COIRO, DOMENICO   +4 more
core   +1 more source

Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine

open access: yesMathematics, 2022
Developing reliable tidal-energy turbines of a large size and capacity links to preservation of the structural safety and stability of the blades. In this study, a bidirectional fluid–structure coupling method was applied to analyze the hydrodynamic ...
Yuquan Zhang   +7 more
doaj   +1 more source

On tidal stream turbines placed off headlands [PDF]

open access: yesJournal of Renewable and Sustainable Energy, 2015
Many candidate sites for tidal stream energy extraction can be classified as headland sites. Understanding the tidal resource of such sites is of fundamental importance to the industry. This paper examines an upper bound for the power that might be generated from an idealised headland. The dependence of this on length of turbine rows, number of turbine
openaire   +2 more sources

Towards a Low-Cost Modelling System for Optimising the Layout of Tidal Turbine Arrays

open access: yesEnergies, 2015
In the long-term, tidal turbines will most likely be deployed in farms/arrays where energy extraction by one turbine may significantly affect the energy available to another turbine.
Stephen Nash   +2 more
doaj   +1 more source

Modelling and Performance Analysis of a Tidal Current Turbine Connected to the Grid Using an Inductance (LCL) Filter

open access: yesEnergies, 2023
Nowadays, integrating renewable energy sources, such as tidal power, into the existing power grids of turbines is crucial for sustainable energy generation.
Ladislas Mutunda Kangaji   +2 more
doaj   +1 more source

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