This site-wide search returns results for all documents and events in Tethys Engineering, prioritizing the best matches. Partial word matches are returned (e.g. "engineer" finds "engineering"), but every entered term must be found. If you don't find any results, try reducing the number of words entered or removing special characters. Filters to the right can help narrow your search. Tethys Engineering features an integrated search with other marine renewable energy databases in PRIMRE - click the buttons below "Showing Results for" to search other integrated databases.
Showing Results for
- Report:
Wong and Jeffrey
… The Supergen Offshore Renewable Energy (ORE) Hub and the Policy and Innovation Group of University of Edinburgh has jointly published four reports investigating the potential of ocean energy …
- Journal Article:
Sun et al.
… currents is substantial and considerable work has been conducted into determining the size of the resource and what the large-scale consequences of extraction might be. This paper describes the work conducted to establish a laboratory-scale … (CFD) code FLUENT™, in order to predict local-flow consequences resulting from the extraction of energy in two and three dimensions from within the water column in a tidal flow. As might be …
- Journal Article:
Thomaz et al.
… Of the cost centres that combine to result in Levelised Cost of Energy (LCOE), O&M costs play a significant part. Several developers have calculated component costs, demonstrating how they can become commercially competitive with other forms of renewable energy. However, there are uncertainties relating to the O&M figures that can only …
- Journal Article:
Zhang et al.
… and maximum power point tracking reference speed simultaneously for each turbine. The benefits of this novel control strategy is tested in a 4.5 MW three-turbine array model which is simulated in MATLAB/Simulink. Results show that in low flow velocity, the objective of stabilizing the fluctuation of loads is mainly achieved by adjusting generator speed. Conversely, the pitch controller …
- Conference Paper:
Tan and Venugopal
… coexist, tidal flow can significantly alter wave parameters and hence affects the estimation of wave energy resources. This study uses a coupled wave-current numerical model to evaluate the influence of wave-current interactions on wave parameters. To achieve this, the simulation was performed in … evaluate the wave-current impact on wave parameters, a qualitative and quantitative analysis of these parameters is carried out, and the results are presented and discussed in the paper. The …
- Conference Paper:
Roberts et al.
… promising concepts which warrant further investigation. This paper focuses on the development of a model for assessing wave energy scenarios, combination of site, WEC and project specifications, on their commercial attractiveness. Quantitative evaluation is challenging due to the high degree of uncertainty at such an early development stage and the lack of design consensus within the …
- Journal Article:
Lam et al.
… To achieve the full potential of tidal stream energy, developers are incentivised to use larger blades on tidal turbines. This requires validation of blade structural designs through full-scale blade fatigue tests to de-risk the engineering … blade load variation through model-scale experiment. It was found that the standard deviations of thrust load range between 200% and 637% of condition without waves. This results in an …
- Journal Article:
Barclay et al.
… for renewable energy conversion, the ocean could help reduce our reliance on fossil fuels. Of the various forms of ocean energy, tidal range power is both mature and predictable, dating back to 1966. However, only a few regions of the world are suited to tidal range power. Here, we examine the tidal range potential of the …
- Journal Article:
Stratigaki et al.
… This research focuses on the numerical modelling of wave fields around (oscillating) structures such as wave energy converters (WECs), to study both near and far field WEC effects. As a result of the interaction between oscillating WECs and the incident wave field, additional wave fields … ‘wave-structure interaction solvers’. On the other hand, for investigating far field effects of WEC farms in large areas, wave propagation models are most suitable and commonly employed. …
- Journal Article: Li et al.
Modelling dynamic loadings of a tidal stream turbine in combined wave-current-turbulence environment
… The understanding of hydrodynamic loadings on a Tidal Stream Turbine (TST) is important to its design, deployment … model has been validated by comparing its outputs to the scale model tests conducted in Edinburgh University’s FloWave wave-current facility. The impact of combined waves, currents, and … - Journal Article:
McNaughton et al.
… The performance benefits of deploying tidal turbines in close side-by-side proximity to exploit constructive interference … side-by-side at 1/4 diameter tip-to-tip spacing, and their performance compared with that of a single rotor. Tests were completed in the 25 m diameter, 2 m deep wave and current FloWave Ocean Energy Research facility. A detailed assessment of inflow conditions at different control points is used to understand the impact that rotors, …
- Journal Article:
Badoe et al.
… the results would differ in a larger scale environment where the flow is more representative of real-world conditions, being either unsteady or non-uniform. In this work, the effectiveness of a generalised actuator disk-computational fluid dynamics (GAD-CFD) approach in accurately … A unique large-scale experimental facility, FloWave, has been used to conduct physical testing of three instrumented model tidal energy converters of rotor diameter 1.2 m under differing …
- Journal Article:
Bonar et al.
… the turbines within these arrays are identical, such models do not consider the possibility of enhanced power production through the exploitation of spanwise variations in local blockage and resistance. In this paper, we use depth-averaged numerical simulations to investigate whether the performance of a tidal turbine array can be further enhanced by varying solely the local blockage, solely the …
- Conference Paper:
Tosdevin et al.
… Much attention has been paid in recent years to the determination of design loads for moored floating structures and the application of established methodologies for fixed structures have been found to be ineffective. This paper experimentally investigates extreme responses of a lazy S moored 1:20 scale model of Mocean Energy’s Blue Star wave energy convertor (WEC) …
- Journal Article:
Chen et al.
… Maximising the performance of a tidal turbine array requires the turbine resistance to be ‘tuned’ for a given channel and … momentum theory. We find that, as compared to the idealised actuator disc, the importance of tuning is significantly reduced for the more realistic tidal rotor, and that this is particularly true for rotors with fixed blade pitch. We also find that the maximum amount of power produced by the blade element momentum rotor, averaged over the tidal cycle, is …
- Conference Paper:
Smith et al.
… The assessment of energy production from a wave energy converter commonly uses a stochastic approach. For … If a suitable frequency-dependent transfer function for the device is defined, an estimate of the total energy output for that specific sea state can be made. However, using a spectral averaging of the sea state in this way fails to account for short-term events that may significantly alter …
- Journal Article:
Borg et al.
… Introducing a duct along the perimeter of a rotor has been acknowledged to augment turbine performance. The outcome causation due to a … shroud, however, is uncertain. This study analyses the hydrodynamic swallowing capacity of a true-scale, vacant duct for tidal turbine applications in aligned and yawed inlet flow … computational fluid dynamics. The performance is investigated within free-stream magnitudes of 1 to 7 m.s −1 , and a bearing angular range of 0° to 45° with the duct axis. In proportion to …
- Journal Article:
Payne et al.
… Laboratory testing of tidal turbine models is an essential tool to investigate hydrodynamic interactions between … numerical models and to estimate rotor loading and wake development to inform the design of full scale machines and array layout. The details of the design and manufacturing techniques used to develop a highly instrumented turbine model …
- Conference Paper:
Venugopal and Smith
… This paper presents the results of a study carried out to determine the change in wave climate around an array of hypothetical wave devices. The main objective of this work is to investigate the change in wave height in the upstream and downstream of the …
- Journal Article:
Edwards et al.
… Interest in wave energy as a viable renewable energy has increased greatly in the past couple of decades. To determine the potential that a certain location has to harvest wave energy, a … for deployment as well as the design and operating sea states. This study shows the level of sophistication that must be included in the verification process within a wave resource … methodology in two articles. The first part shows how doing a complete statistical analysis of the fit of the model at the location of interest is essential for determining the reliability …
Displaying 101 - 120 of 321