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- Journal Article:
Izquierdo-Perez et al.
Offshore floating hybrid wind and wave energy is a young technology yet to be scaled up. A way to reduce the total costs of the energy production process in order to ensure competitiveness in the sustainable energy market is to maximize the farm’s efficiency. To do so, an energy generation and costs calculation model was developed with the objective of minimizing the technology’s Levelized…
- Presentation:
Allahdadi et al.
An Ultra high-resolution unstructured wave model with 200 meters coastal resolution and more than 5.7 million mesh grid points is developed to quantify wave energy resources along the U.S Coasts in the Gulf of Mexico, Puerto Rico, and U.S Virgin Islands. The modeling, based on SWAN, follows the International Electrotechnical Committee (IEC) technical specifications for setup, verification, and…
- Presentation:
Kilcher et al.
Theoretical resource assessments provide an estimate of the total energy available for conversion to perform useful work, and are a critical first step in understanding the value proposition of a type of renewable energy. Theoretical wave energy resource assessment at regional and national scales has traditionally involved a line-integral of the wave energy flux that arrives at the coastline…
- Journal Article:
Insaf et al.
An attempt is made for the first time to assess tidal energy resources at Miani Hor tidal lagoon of Baluchistan province of Pakistan by applying an innovative approach using Geographical Information System (GIS) tools/techniques to develop different geo-statistical models. Baluchistan is the largest province of Pakistan and fortunate to have a natural tidal lagoon called Miani Hor. The…
- Journal Article:
Gross and Magar
Tidal renewable energy is a promising alternative energy resource, and marginal seas are known as excellent sites for tidal energy exploitation. In-stream and tidal energy devices are less exposed to extreme weather events than wind energy. Nevertheless, during tropical storms, the currents may intensify to levels that threaten the integrity of the devices. This paper presents Hurricane Odile…
- Journal Article:
Germain et al.
The development of marine current turbine arrays depends on the understanding of the interaction effects that exist between turbines in close proximity. Moreover, the ambient turbulence intensity also plays a major role in the behaviour of tidal turbines. Thus it is necessary to take ambient turbulence into account when studying interaction effects between several turbines. In…
- Journal Article:
Fairley et al.
Better understanding of the global wave climate is required to inform wave energy device design and large-scale deployment. Spatial variability in the global wave climate is analysed here to provide a range of characteristic design wave climates. K-means clustering was used to split the global wave resource into 6 classes in a device agnostic, data-driven method using data from the ECMWF ERA5…
- Thesis:
Phoenix
Tidal current turbines have the potential to provide a proportion of global energy requirements. Installations to date have been singular test devices but commercial application will involve multiple devices deployed in farms. The viability of large-scale tidal turbine arrays will depend on the expected energy yield of the farm and the associated hydro-environmental impacts. The effects are,…
- Journal Article:
Goh et al.
Headland is identified as potential tidal current energy extraction sites. The complex flow circulation at headland initiated a high-resolution Tg Tuan Headland numerical model in this research. Assessment on potential and impact of tidal energy exploitation was conducted through detail assessment for different zones and depths around the headland. The simulated results show that tip of the…
- Journal Article:
Schaeffer et al.
Ocean currents are an energy resource that could be harnessed to increase renewable energy yields and reduce humanity's dependence on fossil fuels. The first challenge is to identify regions of significant kinetic energy flux that are a viable distance from the shore for the extraction and transport of energy. Western boundary currents (WBCs) have been identified as the most promising resource…
- Journal Article:
Castro-Santos and Filgueira-Vizoso
The aim of this work is to develop a software to calculate the economic parameters so as to determine the feasibility of a floating offshore renewable farm in a selected location. The software can calculate the economic parameters of several types of offshore renewable energies, as follows: one renewable energy (floating offshore wind—WindFloat, tension leg platform (TLP), and spar; floating…
- Journal Article:
Vennell
The Betz limit sets a theoretical upper limit for the power production by turbines expressed as a maximum power coefficient of 16/27. While power production by wind turbines falls short of the Betz limit, tidal turbines in a channel can theoretically have a power coefficient several times larger than 16/27. However, power extraction by turbines in large tidal farms also reduces the flow along…
- Journal Article:
Edmunds et al.
Efficient numerical simulation of renewable energy wind and tidal turbines is important for the layout of devices in farms. Computational Fluid Dynamics (CFD) approaches using blade geometry resolved models are computationally expensive. Therefore, most array models use source term representations of rotors, normally actuator disk, actuator line or blade element disk. Unfortunately, these…
- Journal Article:
Faraggiana et al.
A submerged wave device generates energy from the relative motion of floating bodies. In WaveSub, three floats are joined to a reactor; each connected to a spring and generator. Electricity generated damps the orbital movements of the floats. The forces are non-linear and each float interacts with the others. Tuning to the wave climate is achieved by changing the line lengths so there is a…
- Journal Article:
Ruehl et al.
The floating oscillating surge wave energy converter (FOSWEC) is a wave energy converter that was designed, built, and tested to develop an open-access data set for the purpose of numerical model validation. This paper details the experimental testing of the 1:33-scale FOSWEC in a directional wave basin, and compares experimental data to numerical simulations using the wave energy converter…
- Journal Article:
Ling et al.
Ocean wave energy is a promising area of renewable energy development. However, there are unique operational challenges, particularly with regards to modeling, estimation, and control. Model Predictive Control (MPC) is a widely studied control approach that has strong potential for successful application to ocean wave energy conversion. It combines a predictive element, which is necessary for…
- Journal Article:
Neary et al.
Classification systems for wave energy resources and wave energy converter (WEC) technologies could provide similar benefits to those for the wind energy industry: resource classification facilitating reconnaissance studies and project planning at both regional and national scales; and WEC classification streamlining and reducing costs of WEC device design and manufacturing. In the present…
- Book Chapter:
Haas et al.
Hyrdokinetic tidal energy is the conversion of tidal current kinetic energy to another more useful form, frequently electricity. As with any other form of renewable energy, resource assessments are essential for the tidal energy project planning and design process. While tidal currents have significant spatial and temporal variability, the predictability of tidal flows makes deterministic…
- Journal Article:
Chen et al.
Based on the Navier-Stokes (RANS) equations, a three-dimensional (3-D) mathematical model for the hydrodynamics and structural dynamics of a floating point-absorbing wave energy converter (WEC) with a stroke control system in irregular and extreme waves is presented. The model is validated by a comparison of the numerical results with the wave tank experiment results of other researchers. The…
- Journal Article:
Tom et al.
The aim of this research is to use spectral techniques in evaluating the irregular wave performance of a novel wave energy converter concept that combines an oscillating surge wave energy converter with control surfaces. The control surfaces allow the wave energy converter to have a time-varying geometry that enables the hydrodynamic exciting and radiation coefficients to be altered. In the…
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