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- Conference Paper:
Child and Venugopal
… In this paper we seek configurations of wave energy devices that help to achieve certain objectives, such as maximising power for a … employ an exact hydrodynamic interaction technique, which is used to assess the performance of the resulting arrays. The power enhancing effect of the arrangement ( ¯q-factor) is presented for regular incident waves with a range of …
- Journal Article:
Lavidas and Venugopal
… coastal assessment for the Libyan Sea at the South-West Mediterranean. To date majority of information for the area, are based on large scale oceanic models with coarse resolutions not … and analysis provides an in-depth wave energy resource assessment and detail dissemination of sites according to their metocean characteristics. Identification for wave energy is based on the database constructed, allowing the quantification of energy levels and resource implications at sites. Mean values of wave heights around the …
- 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 … energy devices. This design tool will facilitate experimental planning, quantification of uncertainties, and correlation of model test results with field data. … 10.1016/j.ijome.2017.04.001 …
- Journal Article:
Cotten and Forehand
… herein, the WaveTrain device provides an alternative approach to retain the benefits of sloped motion, using a series of joints and struts to mechanically interconnect a series of sloped modules, each of which houses an internal water column to allow reaction against the …
- Journal Article:
Creech et al.
… Computational fluid dynamics is used to study the impact of the support structure of a tidal turbine on performance and the downstream wake characteristics. A high-fidelity computational model of a dual rotor, contra-rotating tidal turbine in a large channel domain is presented, with …
- Thesis:
Vezza
… be done in part by considering anti-biofouling solutions: the reduction, removal and recording of associated marine organisms which can impact numerous turbine operations, such as obstructing … heat exchange or increasing blade drag, and can provoke environmental concerns. The aim of this thesis is to develop a comprehensive, quick and cost effective anti-biofouling approach … and record biofouling for engineering purposes and in relation to the potential presence of alien invasive species. A three stage anti-biofouling strategy for non-scientific turbine …
- Thesis:
Lin
… energy convertors are designed to use either vertical (heave) or horizontal (surge) movements of waves. But the frequency response of small heaving buoys and oscillating water column devices shows that they are too stiff and so … that a device that moved at some intermediate slope angle could have an intermediate value of hydrodynamic stiffness and so be resonant at a variable and desirable part of the wave …
- Journal Article:
Bailey and Bryden
… energy converter. The power take-off uses the relative velocity between the main structure of the wave energy converter and an inertial referenced mass contained within its outer envelope. The power take-off consists of a linear spring and a quadratic damper. In this paper the mathematical principles behind a working time domain simulation of a non-linear power take-off as applied to a relative motion inertial referenced wave energy …
- Journal Article:
MacGillivray et al.
… as an analytical tool for technology forecasting involves making assumptions over a range of key uncertainties, often implicitly. In this paper, we present an explicit treatment of the key uncertainties involved in learning rates' analyses of marine energy innovation (wave and tidal stream) — technology fields attracting considerable …
- Journal Article:
Child and Venugopal
… In this paper, the influence of the spatial configuration of a wave energy device array upon total power output is investigated. Hydrodynamic interactions are computed using a method capable of producing the linear wave theory solution to arbitrary accuracy. The overall performance of …
- Thesis:
Child
… In this thesis, certain issues relating to a number of wave energy absorbers operating in the same vicinity are investigated. Specifically, arrangements of the devices within such an array are sought, such that beneficial hydrodynamic interference between members is exploited and unwanted effects mitigated. Arrays of ‘point absorber’ devices as well as converters with multiple closely spaced floats are …
- Thesis:
Naberezhnykh
… among renewable technologies due to its high predictability, making it an essential part of the renewable energy mix. However, extracting energy from turbulent and energetic tidal sites … to higher safety factors and increased device costs. This work investigates the suitability of current methodologies and wind-based turbulence models for tidal applications. It aims to … for fatigue loading, helping to reduce uncertainty in device design. Comparisons of semi-empirical models to turbulence measurements from four Acoustic Doppler Current Profilers …
- Journal Article:
Cruz and Salter
… This paper presents recent numerical studies conducted at The University of Edinburgh related to a modified version of the Edinburgh duck wave energy converter. Its purpose …
- Journal Article:
Scarlett and Viola
… Tidal turbines encounter a range of unsteady flow conditions, some of which may induce severe load fluctuations. Rotor blades can experience stall delay, load hysteresis and dynamic stall. Yet, the range of flow conditions which cause these effects for a full-scale axial-flow turbine are unclear. In …
- Journal Article:
Venugopal and Nemalidinne
… This paper reports the methodology established in the application of a numerical wave model for hindcasting of wave conditions around the United Kingdom, in particular for Scottish waters, for the purpose of wave energy resource assessment at potential device development sites. The phase averaged MIKE …
- 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:
Crozier et al.
… The high operation and maintenance (O&M) costs of wave energy converters are a large impediment to the technology’s development. Magnetic gears … suffer considerably less wear than mechanical alternatives. This paper presents the results of a dynamic analysis of a magnetically geared power take off system that has been designed for use with an oscillating …
- Journal Article:
Pennock et al.
… This work investigates potential cost reduction trajectories of three emerging offshore renewable energy technologies (floating offshore wind, tidal stream, … SET-Plan levelised cost targets. Component-based experience curves have been applied as part of the methodology, characterised through the comparative maturity level of each technology-specific cost centre. The resultant early-stage target costs are then compared …
- Thesis:
Pérez-Ortiz
… with analytical solutions for inviscid flow past a circular cylinder located in the centre of a channel and in the vicinity of a wall. The model is then validated against laboratory measurements of flow patterns for impulsively-started flow past a submerged circular cylinder, and for flow …
- 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 …
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