Results 41 to 50 of about 29,236 (265)
Design and testing of a contra-rotating tidal current turbine [PDF]
, 2005 A contra-rotating marine current turbine has a number of attractive features: nearzero reactive torque on the support structure, near-zero swirl in the wake, and high relative inter-rotor rotational speeds.
Clarke, J. A. +3 more
core +4 more sources
Incorporation of a Non-Constant Thrust Force Coefficient to Assess Tidal-Stream Energy
Energies, 2019 A novel method for modelling tidal-stream energy capture at the regional scale is used to evaluate the performance of two marine turbine arrays configured as a fence and a partial fence.
Lilia Flores Mateos, Michael Hartnett
doaj +1 more source
Surface Characterisation of Kolk-Boils within Tidal Stream Environments Using UAV Imagery
Journal 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
The parameterisation of turbulence in the marine environment [PDF]
, 2016 There are many problems in the fields of flow modelling around structures and tidal stream energy yield analysis which require a thorough understanding of the turbulent and time-averaged flow speeds in marine environments.
Hardisty, Jack, Jennings, Ross
core +1 more source
Lifetime Analysis of IGBT Power Modules in Passively Cooled Tidal Turbine Converters
Energies, 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
Techno-Economic Optimal Sizing Design for a Tidal Stream Turbine–Battery System
Journal of Marine Science and Engineering, 2023 This article deals with the techno-economic optimal sizing of a tidal stream turbine (TST)–battery system. In this study, the TST system consists of a turbine rotor and a permanent magnet synchronous generator (PMSG) associated with a three-phase ...
S. Toumi +4 more
semanticscholar +1 more source
Mathematics, 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
Flow curvature effects on dynamic behaviour of a novel vertical axis tidal current turbine: numerical and experimental analysis [PDF]
, 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
Energies, 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
On tidal stream turbines placed off headlands [PDF]
Journal 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