Results 21 to 30 of about 384,180 (210)

Tidal energy extraction modifies tidal asymmetry and transport in a shallow, well-mixed estuary

open access: yesFrontiers in Marine Science, 2023
Tidal energy extraction is increasingly being studied as a potential renewable energy resource in estuaries worldwide. Although it is understood that energy extraction via tidal stream turbines can modify currents and transport within estuaries, it is ...
Preston Spicer   +4 more
doaj   +1 more source

Design methodology of permanent magnet generators for fixed-pitch tidal turbines with overspeed power limitation strategy

open access: yesJournal of Ocean Engineering and Science, 2020
This paper deals with a design methodology of permanent magnets (PM) generators used for fixed-pitch tidal turbines in a marine renewable energy context.
Sofiane Djebarri   +3 more
doaj   +1 more source

Analysis of Wake Turbulence for a Savonius Turbine for Malaysia’s Slow-Moving Current Flow

open access: yesInternational Journal of Renewable Energy Development, 2022
With Malaysia being surrounded by water bodies, tidal energy could be used for energy extraction. While several turbine designs and technologies have been used for tidal energy extraction, information on the use of vertical-axis tidal turbines (VATTs ...
Anas Abdul Rahman   +4 more
doaj   +1 more source

Tidal-stream power assessment—A novel modelling approach

open access: yesEnergy Reports, 2020
An alternative approach for simulating turbine array energy capture, momentum sink-TOC, was developed to improve conventional methodologies for assessing tidal-stream energy resource.
L.M. Flores Mateos, M. Hartnett
doaj   +1 more source

Feasibility Study: Effect of Tidal Turbines Cut-in Speed for Power Generation in New Zealand

open access: yesChemical Engineering Transactions, 2021
This paper proposes and evaluates an optimized system of tidal turbines as a renewable energy generating unit in New Zealand. A comprehensive simulation model has been set up, using several available commercial software packages to test the performance ...
Navid Majdi Nasab, Jeff Kilby
doaj   +1 more source

Modelling Tidal Stream Turbines [PDF]

open access: yes, 2015
This book provides insights on a broad spectrum of renewable and sustainable energy technologies from the world’s leading experts. It highlights the latest achievements in policy, research and applications, keeping readers up-to-date on progress in this rapidly advancing field.
Frost, Carwyn   +4 more
openaire   +2 more sources

Instabilities in tidal turbine wakes [PDF]

open access: yesProceedings of the European Wave and Tidal Energy Conference, 2023
We report on the observation of vortex instabilities in the wake of a tidal turbine undergoing harmonic unsteady axial inflow (e.g. due to surface waves). The work was carried out using unsteady RANS (URANS) modelling using the open-source CFD software OpenFOAM, using the `pimpleDyMFoam' solver.
Smyth, ASM, Nishino, T, Young, AM
openaire   +1 more source

An Up - to - Date Review of Large Marine Tidal Current Turbine Technologies [PDF]

open access: yes, 2014
Owning to the predictability of tidal current resources, marine tidal current energy is considered to be a reliable and promising renewable power source for coastal areas or some remote islands.
SCUILLER, Franck   +11 more
core   +1 more source

Experimental investigation into the improvement of self-starting capability of vertical-axis tidal current turbine

open access: yesEnergy Reports, 2021
Indonesia has a lot of tidal current energy resources that can be harnessed using a vertical-axis turbine. However, one of the disadvantages of the vertical-axis turbine is its low self-starting capability.
Dendy Satrio, I Ketut Aria Pria Utama
doaj   +1 more source

Low speed doubly salient permanent magnet generator with passive rotor for a tidal current turbine [PDF]

open access: yes, 2013
This paper presents a low speed permanent magnet generator that can be associated with a tidal turbine. This structure has a passive rotor which leads to a simple and robust structural solution. The principle of operation and an electromecanical model of
MOREAU, Luc   +3 more
core   +1 more source

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