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- Oliveira et al.
In Brazil, the Amazon River has a high potential to harness hydraulic energy to generate electricity. This article presents a methodology to quantify the hydraulic potential for the hydrokinetic technology of the Amazon River’s segments, identifying and calculating the theoretical, geographic, technical and market potential of the places. The methodology uses the hydrodynamic behavior of the…
- Ocean Energy Systems
This brochure highlights a few examples of tidal current energy projects developed across Ocean Energy Systems (OES) member countries.
Advances in Tidal Current Energy
The movement of ocean water volumes, caused bythe changing tides, creates tidal current energy. Tidescause kinetic movements, i.e., reversing currentflows, which can be accelerated near coasts, wherethere is…
- Ocean Energy Systems
This brochure highlights a few examples of wave energy projects developed across Ocean Energy Systems (OES) member countries.
Advances in Wave Energy
Great progress continues to be made by several wave energy developers. Successful deployments have takenplace in all corners of the world from Australia, through Asia and Europe to North America.
Several full-scale devices… - Yeh et al.
In response to the increasing renewable energy demand, harvesting the energy from Kuroshio become an important task in Taiwan. In this study, the ANSYS-FLUENT and ANSYS-AQWA were used to design a Spar platform for carrying multiple current energy harvesters. The platform follows the design code of ABS rules (ABS, 2014). The designed spar model was established in OrcaFlex, and so as the mooring…
- Wang et al.
The natural surge and pitch frequencies of semisubmersible offshore wind platforms are typically designed to be below the wave frequencies to avoid direct excitation. However, surge or pitch resonance can be excited by the nonlinear low-frequency loads generated by irregular incident waves. Second-order potential-flow models with added Morison drag have been found to underpredict this low-…
- Yang et al.
Induction generators have been successfully applied to a variety of industries. However, their operation and maintenance in renewable wind and marine energy industries still face challenges due to harsh environments, limited access to site and relevant reliability issues. Hence, further enhancing their condition monitoring is regarded as one of the essential measures for improving their…
- National Hydropower Association and Marine Energy Council
The abundant potential to develop marine energy isstunning. Harnessing waves, tides, currents, and eventhermal gradients, could technically produce more thanhalf of all the nation’s electricity needs.
Demonstration projects and research over the pastdecade, supported by the U.S. Department of Energyand U.S. Navy, show that innovative marine energytechnologies could be the missing link…
- Rehman et al.
Tidal energy is one of the major sources of renewable energy. To accelerate the development of tidal energy, improved designs of Tidal Current Turbine (TCT) are necessary. The effect of tower on performance and wake of TCT is investigated using Computational Fluid Dynamics (CFD) simulations. Transient analysis with transient rotor stator frame change model and shear stress transport turbulence…
- Naderipour et al.
In this paper, a comparative evaluation to optimal, cost-effective, and reliable designing of hybrid renewable and clean energy systems consisting of photovoltaic (PV), wind turbine (WT), tidal, and fuel cell (FC) energy (PV/WT/tidal/FC) with hydrogen storage (HS) is proposed. The determination of optimal system configuration is provided for three regions of Iran: Gorgan, Urmia, and Yazd with…
- Abad et al.
This paper outlines a methodology to determine the amount of renewable energy that can be accommodated in a power system before adverse impacts such as over-voltage, over-loading and system instability occur. This value is commonly known as hosting capacity. This paper identifies when the transmission network local hosting capacity might be limited because of static and dynamic network limits…
- Driscoll et al.
The U.S. Department of Energy’s Wave Energy Prize Competition encouraged the developmentof innovative deep-water wave energy conversion technologies that at least doubled deviceperformance above the 2014 state of the art, based on U.S. reference models. Because levelizedcost of energy (LCOE) metrics are challenging to equitably apply to new technologies wheresignificant uncertainty exists in…
- Trivedi et al.
The present study deals with the performance of an U-shaped oscillating water column device under the action of oblique incident waves. To solve the associated boundary value problem, the dual boundary element method (DBEM) is used. Various physical parameters associated with the U-shaped OWC device, such as the radiation susceptance and conductance coefficients, and the hydrodynamic…
- Oikonomou et al.
Applications including the offshore aquaculture, remotely operated vehicles, data acquisition systems, anddesalinationcan be either supplemented or completely powered by renewable energy. The spar-buoy oscillating-water-column wave energy converter concept, typically studied for large scale wave energy production, can be re-designed to meet the power requirements of such applications, which…
- Ibarra-Berastegi et al.
Mutriku is a wave farm on the Spanish coast of the Bay of Biscay that has now been continuously supplying electricity for more than nine years. Since 1979, there has been a growing trend in wave energy flux for the whole Bay of Biscay. ERA5 data at the grid point nearest to Mutriku indicate an increase of 0.146 kW/m per decade for the 1979–2019 period. In this paper, a Self-Organizing Map (SOM…
- Hanif et al.
Marine resources such as waves and tides house immense potential to serve as energy-rich sources of renewable power generation. They are known to be highly available, persistent and predictable in nature. Therefore, these can serve as one of the critical components for a primarily renewable energy-driven, resilient and robust future power grid. Although some inherent temporal characteristics…
- Brekken et al.
If wave energy technology is to mature to commercial success, array optimization could play a key role in that process. This paper outlines physical and numerical modeling of an array of five oscillating water column wave energy converters. Numerical model simulations are compared with experimental tank test data for a non-optimal and optimal array layout. Results show a max increase of 12% in…
- O'Mahoney et al.
To estimate the impact on energy production and environment of tidal turbines placed in the Eastern Scheldt Storm Surge Barrier a Computational Fluid Dynamics (CFD) study has been carried out on the additional head differences induced by the turbines. The CFD model focusses on a single gate opening of the Storm Surge Barrier and includes half of the adjoining gates on either side. In this 40 m…
- Träsch et al.
The undulating membrane tidal energy converter is a device that uses the flutter instabilities occurring from the interaction between a slender body and a fluid flow. A new numerical model has been developed using a 2D corotational finite element method to represent the structure and the unsteady point-vortex method to compute the flow. These methods as well as the interaction process are…
- McGuinness and Thomas
This paper describes the optimisation of arrays of wave energy converters (WECs) of point absorber type. The WECs are spherical in shape and operate in heave only. Previous work is extended to an optimisation of array layouts without a prescribed geometry. The objective function is chosen as the mean of the array interaction factor over a prescribed range of incident wave angles. This…
- Cheng et al.
Harvesting energy from natural resources is of significant interest because of their abundance and sustainability. In particular, large-scale marine energy storage shows promising prospects because of the massive and diverse energy forms such as waves, tide and currents; however it is greatly hindered due to its complicated circumstances and intermittent nature. Storing and transporting…
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