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
- 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:
Robert et al.
… Tidal turbine arrays have considerable potential in providing a reliable source of renewable energy. Technology limitations are obstructing the fast development of the sector, however, one of which is the lack of knowledge of mechanical properties of submerged composites used to build …
- Conference Paper:
Stiven et al.
… This research examines the impact of accuracy in tidal current energy resource assessment on the likely economics of a tidal array project, ultimately estimating the impact of resource uncertainty on overall lifetime project economics. The analysis utilises field data …
- Conference Paper:
Finlay et al.
… tidal resonance in the channel, a simple two dimensional model has been developed for a series of simulated estuaries, ranging from a simple box channel with a uniform flat bed to a simple wedge shaped channel with a solid barrier across, to a simulation of the Severn Estuary with topographic and bathymetric values. These modelsshow amplitudes and phases of elevation and current flow for each model scenario. model outputs show that overall tidal …
- Conference Paper:
Mueller et al.
… The evolution of a novel permanent magnet (PM) generator topology is described in the paper. It has the … for direct drive applications in wind, wave and tidal current generators. The philosophy of the generator concept is based upon reducing the structural mass by eliminating large unwanted … available rotary PM generator for a 100kW turbine is presented to show the potential of the new topology … 10728 …
- Conference Paper:
Jeffrey et al.
… This paper provides an overview of the UKERC technology roadmap and its proposed internationalization. It describes a route for … to technology development in the ocean energy sector, whilst taking into account the needs of other stakeholders. The successful implementation of the technology roadmap depends upon a number of complex interactions between commercial, …
- Conference Paper:
Ferguson et al.
… is intermittent, so energy storage technologies are necessary to ensure a secure supply of energy. One option is hydrogen, which has applicability for seasonal energy storage and as … grid electricity is not used, by reducing minimum plant capacities. This shows the importance of choosing favourable business models and plant operation strategies when developing proposals. …
- Conference Paper:
Cuthill et al.
… The structural lifetime fatigue testing of tidal turbine blades is currently a challenge faced by the tidal industry. Due to the high stiffness and short length of composite tidal blades, it is not possible to perform resonant fatigue testing in the same way … too high a natural frequency which, if tested resonantly, would result in internal heating of the composite and lead to premature failure. The aerospace industry uses conventional …
- Conference Paper:
Zhang et al.
… revenue, and reducing unexpected maintenance will reduce operation and maintenance cost. Both of these help to reduce levelized cost of energy, in order to enhance tidal energy competitiveness. This paper presents a novel control … to reduce the loadings on tidal current turbines, while still enabling a significant amount of the available power to be extracted. The control strategy is based on adjusting the axial …
- Conference Paper:
Gretton et al.
… Results from a computational fluid dynamics (CFD) model of a vertical axis tidal current turbine are presented. This CFD model has been implemented in … model. The turbine simulated is a 15 kW small-scale prototype device being developed by Edinburgh Designs Ltd. with independently and continuously variable pitch blades. A major focus of the present work is the thorough verification and validation of the numerical model. This is …
- Conference Paper:
Hodgins et al.
… aimed at reducing overall system mass in direct drive power takeoff applications. The design of a C-GEN generator requires the combination of electromagnetic, structural and thermal models. Two rotary prototypes of 15 & 20kW have been constructed and tested and the 15kW prototype has been fitted to a wind …
- Conference Paper:
Iyer et al.
… be economically exploited, certain conditions need to be fulfilled. Principally the strength of the resource needs to be quantified before it can be effectively utilised. This paper will … datasets have so far typically been used to examine the resource. A methodology to combine all of the available datasets to produce an improved resource assessment methodology is desirable. … only be suitable if there is good correlation and consistency between them. The suitability of combining three UK wide datasets will be examined in this analysis. The data sources …
- Conference Paper:
Mueller et al.
… This paper summarises UKERC roadmapping activity in the last 12 to 18 months. A summary of previous activity is provided since the start in April 2005, to put the current status in context. Results of questionnaires and discussion summaries are presented in the paper, which shows that UKERC has … criticism was provided in the discussions at the Oxford workshop to assist in the development of the road-map. All the data collected since the start of the road-map is being collated and …
- Conference Paper:
Hudson et al.
… Installation, operations and maintenance costs represent one of the major barriers to the growth of wave and tidal-stream energy projects and a cost that can be significantly reduced in offshore … strategies can help minimise these costs. To achieve realistic and comprehensive estimates of project duration using these tools, it is essential to represent accurately the durations and …
- Conference Paper:
Wakelam et al.
… To enable accurate prediction of performance, loading and lifetime fatigue, the operating environment of tidal stream turbines must be comprehensively characterised over a range of seasons and tidal cycles. The met-ocean dataset acquired at the European Marine Energy Centre …
- Conference Paper:
Jordan et al.
… commercial array is limited to 6MW. Upcoming government support should see the size of such arrays increase by orders of magnitude, and thus the optimal placement of turbines within tidal arrays is an emerging challenge for successful commercial integration. …
- Conference Paper:
Vogel et al.
… Tidal turbines are deployed for extended periods in a harsh environment with significant levels of flow induced unsteady loading. The contributions of these loads to fatigue damage of the turbine blades is not well understood, contributing to over-engineered structures with …
- Conference Paper:
Dubon et al.
… Fatigue testing for tidal turbine blades involves the application of cyclic loads without matching the blade's natural frequency, which is challenging due to their high stiffness and associated thermal issues of composite materials at those frequencies (typically around 18Hz cycles). An auxiliary system … inefficient. To solve this problem, researchers utilized real on-site data to define a series of equivalent target loads and implemented them in FastBlade, which proved an efficient way to …
- Conference Paper:
Dorward et al.
… with potential to make a significant contribution to our future energy needs. Development of the industry, from resource assessment to device design and operation, requires characterisation of the flow environment at a variety of spatial and temporal scales at tidal energy sites. Demand for flow characterisation arises …
- Conference Paper:
Dooher et al.
… A great deal of energy can potentially be generated using underwater tidal current turbines. These operate in … is roughly 800 times denser than air can harvest more energy. Moreover, one major advantage of tidal current energy over other forms of renewable energy is that underwater currents and tides are predictable and the energy …
Displaying 1 - 20 of 35