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Tidal Current Turbine Wake and Park Layout in Transient Environments [PDF]

Volume 9B: Ocean Renewable Energy, 2014
Due to orbital velocities of the waves, the characteristics of tidal current turbines change over time. Therefore the induction factor and subsequent the wake is time dependent. Within the present research this time dependency is investigated by using Computational Fluid Dynamics (CFD) with Virtual Free Surface (VFS) and Actuator Disc (ACD) models.
Arnold, Matthias, Cheng, Po Wen, Daus, Philipp, Biskup, Frank   +3 more
openaire   +2 more sources

Research on Solidity of Horizontal-Axis Tidal Current Turbine

Energies, 2023
In this paper, the blade solidity of the tidal current turbine was investigated. Based on the blade element momentum theory, different design flow velocities were selected to design two blade types with different solidities.
Xiancheng Wang, Hao Li, Junhua Chen, Chuhua Jiang, Lingjie Bao   +4 more
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, Beth E. Scott, Louise Kregting, Jason McIlvenny, Jared Wilson, Ana Couto, Deon Roos, Marion Yanez, Benjamin J. Williamson   +8 more
doaj   +1 more source

Modeling Evaluation of Tidal Stream Energy and the Impacts of Energy Extraction on Hydrodynamics in the Taiwan Strait

Energies, 2013
Tidal stream speeds in straits are accelerated because of geographic and bathymetric features. For instance, narrow channels and shallows can cause high tidal stream energy.
Ming-Hsi Hsu, Wei-Bo Chen, Wen-Cheng Liu
doaj   +1 more source

Physical Modelling of Tidal Stream Turbine Wake Structures under Yaw Conditions

Energies, 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, Jisheng Zhang, Athanasios Angeloudis, Yudi Zhou, Stephan C. Kramer, Matthew D. Piggott   +5 more
doaj   +1 more source

Tidal Current Energy Resources Assessment in the Patinti Strait, Indonesia

International Journal of Renewable Energy Development, 2021
Indonesia is currently intensively developing its renewable energy resource and targets at least 23% by 2025. As an archipelago country, Indonesia has the potential to benefit from its abundant renewable energy resources from its offshore regions ...
Franto Novico, Evi Hadrijantie Sudjono, Andi Egon, David Menier, Manoj Methew, Munawir Bintang Pratama   +5 more
doaj   +1 more source

An Experimental Study on the Darrieus-Savonius Turbine for the Tidal Current Power Generation

Journal of Fluid Science and Technology, 2008
The Darrieus turbine is popular for tidal current power generation in Japan. It is simple in structure with straight wings rotating around a vertical axis, so that it has no directionality against the motion of tidal flow which changes its direction ...
Yusaku KYOZUKA
doaj   +1 more source

Evaluation of the accuracy of soft computing learning algorithms in performance prediction of tidal turbine

Energy Science & Engineering, 2021
Marine renewable energy has made significant progress in the last few decades. Even after making substantial progress, the cost of electricity produced by tidal turbines is high.
Shahab S. Band, Pezhman Taherei Ghazvinei, Khamaruzaman bin Wan Yusof, Mohammad Hossein Ahmadi, Narjes Nabipour, Kwok‐Wing Chau   +5 more
doaj   +1 more source

Evaluation of Model Predictions of the Unsteady Tidal Stream Resource and Turbine Fatigue Loads Relative to Multi-Point Flow Measurements at Raz Blanchard

Energies, 2023
The next stage of development of the tidal stream industry will see a focus on the deployment of tidal turbines in arrays of increasing device numbers and rated power.
Hannah Mullings, Samuel Draycott, Jérôme Thiébot, Sylvain Guillou, Philippe Mercier, Jon Hardwick, Ed Mackay, Philipp Thies, Tim Stallard   +8 more
doaj   +1 more source

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

Journal 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   +1 more source