Results 11 to 20 of about 550,087 (272)
Blockage Corrections for Tidal Turbines—Application to an Array of Turbines in the Alderney Race
Energies, 2022 Tidal turbines are located in shallow water depths in comparison to their dimensions (15 m-diameter turbines in 40 m depths, typically). Constrained vertically by the water depth and laterally by neighbouring turbines, the flow within a tidal farm is ...
Nasteho Djama Dirieh +3 more
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Energies, 2021 Assessing the efficiency of a tidal turbine array is necessary for adequate device positioning and the reliable evaluation of annual energy production. Array efficiency depends on hydrodynamic characteristics, operating conditions, and blockage effects ...
Jérôme Thiébot +3 more
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Upper Limit for Tidal Turbines
IOP Conference Series: Earth and Environmental Science, 2021 A common method to model hydrokinetic turbines is the disc actuator theory as used by Garrett & Cummins [1] (in the following denoted by approach I), Whelan et al. [2], Houlsby et al. [3] (both approach II) and Pelz et al. [4] (approach III) for a single
Christian Schmitz, Peter F. Pelz
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Performance and wake characteristics of tidal turbines in an infinitely large array [PDF]
Journal of Fluid Mechanics, 2021 The efficiency of tidal stream turbines in a large array depends on the balance between negative effects of turbine-wake interactions and positive effects of bypass-flow acceleration due to local blockage, both of which are functions of the layout of ...
Pablo Ouro, T. Nishino
semanticscholar +1 more source
Energies, 2021 This paper evaluates the feasibility of using a hybrid system consisting of wind and tidal turbines connected to a microgrid for power supply to coastal communities that are isolated from a main supply grid.
Navid Majdi Nasab +2 more
semanticscholar +1 more source
Frontiers in Marine Science, 2022 Arrays of tidal turbines are being considered for tidally energetic coastal sites which can be important habitat for many species of marine mammal. Understanding risks to marine mammals from collisions with moving turbine blades must be overcome before ...
D. Gillespie +3 more
semanticscholar +1 more source
Passive flow control mechanisms with bioinspired flexible blades in cross-flow tidal turbines
Experiments in Fluids, 2021 State-of-the-art technologies for wind and tidal energy exploitation focus mostly on axial turbines. However, cross-flow hydrokinetic tidal turbines possess interesting features, such as higher area-based power density in array installations and shallow ...
S. Hoerner +5 more
semanticscholar +1 more source
Energies, 2021 Oscillating hydrofoils were installed in a water tunnel as a surrogate model for a hydrokinetic cross-flow tidal turbine, enabling the study of the effect of flexible blades on the performance of those devices with high ecological potential.
S. Hoerner +6 more
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Optimization of a Grid-Connected Microgrid Using Tidal and Wind Energy in Cook Strait
Fluids, 2021 The Cook Strait in New Zealand is an ideal location for wind and tidal renewable sources of energy due to its strong winds and tidal currents. The integration of both technologies can help to avoid the detrimental effects of fossil fuels and to reduce ...
Navid Majdi Nasab +3 more
doaj +1 more source
Instabilities in tidal turbine wakes [PDF]
Proceedings 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
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