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- Journal Article:
Want et al.
As part of ongoing commitments to produce electricity from renewable energy sources in Scotland, Orkney waters have been targeted for potential large-scale deployment of wave and tidal energy converting devices. Orkney has a well-developed infrastructure supporting the marine energy industry; recently enhanced by the construction of additional piers. A major concern to marine industries is…
- Journal Article:
Vinagre and Fonseca
Background: Marine biofouling is a threat to industries working in the marine environment, representing enormous costs associated with equipment impairment and loss of performance. In the Marine Renewable Energy (MRE) and other maritime sectors which operate at sea for long periods, an important aspect of biofouling is related to the type and frequency of maintenance.
Methods: This study… - Journal Article:
Chiri et al.
In this work, we develop a high-resolution oceanographic database, suitable for marine renewable energy (MRE) applications. We apply downscaling techniques, using ROMS numerical model, to generate a 29-year (1985–2013), high-resolution (325 m), hourly sea level and currents (10 vertical levels) hindcast that reproduces storm surge and astronomical tide dynamics at a MRE test site (BiMEP) in…
- Journal Article:
Noble et al.
The well-known dispersion relation links the length and period of a water wave with the depth in which it propagates. When model testing in tanks, the water depth should be consistently scaled to correctly replicate the waves. While this is done routinely by scaling foreshore bathymetry in coastal engineering physical model studies, and is not significant for deep water scenarios, this is not…
- Journal Article:
Liu et al.
Long term wave measurement is of vital importance for assessing the wave power resources, optimizing the productivity of wave energy devices, and determining the largest waves for the survivability of the wave energy device during its life time in sea. Among the technologies developed for measuring ocean waves, wave buoys may be one of the most popular used devices for long-term wave…
- Journal Article:
Rolland et al.
As advances in numerical modelling techniques support the increased confidence in predictions from computer simulations, the need remains to have experimental verification built into the design process. This paper outlines the experimental investigation carried out on a shielded vertical axis turbine in a marine environment. The experiments consist of performance measurements and the use of…
- Journal Article:
Ferguson et al.
A comprehensive understanding of the flow within an oscillating water column (OWC) is essential to improving the efficiency of the underwater geometry of this type of wave energy converter. This study aims to investigate the impact of the sidewalls on the flow and the changes in flow across the device. Scale model experiments were performed on a forward facing bent duct OWC to generate two-…
- Journal Article:
Leijon et al.
This paper provides a status update on the development of the Swedish wave energy research area located close to Lysekil on the Swedish West coast. The Lysekil project is run by the Centre for Renewable Electric Energy Conversion at Uppsala University. The project was started in 2004 and currently has permission to run until the end of 2013. During this time period 10 grid-connected…
- Journal Article:
Gaurier et al.
One key step of the industrial development of a tidal energy device is the testing of scale prototype devices within a controlled laboratory environment. At present, there is no available experimental protocol which addresses in a quantitative manner the differences which can be expected between results obtained from the different types of facilities currently employed for this type of testing…
- Thesis:
Cahill
The wave energy industry is progressing towards an advanced stage of development, with consideration being given to the selection of suitable sites for the first commercial installations. An informed, and accurate, characterisation of the wave energy resource is an essential aspect of this process. Ireland is exposed to an energetic wave climate, however many features of this resource are not…
- Report:
Dallman and Neary
This report presents met-ocean data and wave energy characteristics at eight U.S. wave energy converter (WEC) test and potential deployment sites. Its purpose is to enable the comparison of wave resource characteristics among sites as well as the selection of test sites that are most suitable for a developer’s device and that best meet their testing needs and objectives. It also provides…
- Journal Article:
Morandi
A scaled-model of an HATCT (Horizontal Axis Tidal Current Turbine) was tested in the CNR-INSEAN Circulating Water Channel. Two different analyses were performed during the experiments: preliminary investigation of the performances of the turbine in different working conditions and LDV (Laser Doppler Velocimetry) measurements in the near wake. Velocity measurements are performed in phase…
- Journal Article:
Dragić et al.
For a number of years, Sigma Energy has been developing a novel type of a wave energy converter. It is a point absorber which transforms, by original mechanical PTO system, the wave-induced vertical motion of the circular float due to waves into electrical energy. The performance of the device has been thoroughly analyzed by original software developed by Sigma Energy as well as by several…
- Journal Article:
Pedersen et al.
For wave energy to become a major future contributor of renewable energy it is a requirement that the efficiency and reliability of the Power Take-Off (PTO) systems is significantly improved. However, the cost of installing and testing PTO-systems at sea is very high. The focus of the current paper is therefore on the design and commissioning of a full scale wave simulator for testing PTO-…
- Journal Article:
Atan et al.
Ireland offers a complete testing pathway for wave energy devices from small-scale testing in laboratory wave tanks to the Galway Bay Test Site (GBTS), located in a sheltered bay, and the full-scale Atlantic Marine Energy Test Site (AMETS) exposed to the Atlantic Ocean on its west coast. This research investigates the scaling relationships between the GBTS and the AMETS, and also with the…
- Journal Article:
Gebreslassie et al.
This paper investigates the accuracy of the Computational Fluid Dynamics (CFD) based Immersed Body Force (IBF) turbine modelling method for predicting the flow characteristics of a Momentum-Reversal-Lift type of tidal turbine. This empirically-based CFD model has been developed based on the actuator disc method enhanced with additional features to mimic the effect of the complex blade motion…
- Journal Article:
Coles et al.
Marine current energy conversion can provide significant electrical power from resource-rich sites. However since no large marine current turbine arrays currently exist, validation of methods for simulating energy extraction relies upon scaled down laboratory experiments. We present results from an experiment using porous fences spanning the width of a recirculating flume to simulate flow…
- Journal Article:
Ransley et al.
The survivability of Wave Energy Converters (WECs) in extreme waves is a critical issue faced by developers; typically assessed via small scale physical experiments with considerable uncertainties. Until recently, confidence in the ability of numerical tools to reproduce extreme wave events and their interaction with floating structures has been insufficient to warrant their use in routine…
- Journal Article:
Cahill and Lewis
The Atlantic Marine Energy Test Site (AMETS), a grid connected test area for the deployment of full scale Wave Energy Converters (WECs), is being developed by the Sustainable Energy Authority of Ireland near Belmullet in Co. Mayo, Ireland. In this paper measured data provided by two wave buoys, positioned at a deepwater location (100 m depth) and an offshore location (50 m depth), are analysed…
- Journal Article:
Sellar et al.
The data analyses and results presented here are based on the field measurement campaign of the Reliable Data Acquisition Platform for Tidal (ReDAPT) project (Energy Technologies Institute (ETI), U.K. 2010–2015). During ReDAPT, a 1 MW commercial prototype tidal turbine was deployed and operated at the Fall of Warness tidal test site within the European Marine Energy Centre (EMEC), Orkney, U.K…
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