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- Journal Article:
Pisetta et al.
… predictable renewable energy. New technology is needed to decrease the levelized cost of energy and to make this energy sector competitive in the energy market. A key area where … costs is mitigating the hydrodynamic load fluctuations, and thus increasing the fatigue life of the turbine. Here, we formulate a passive morphing blade concept that aims to mitigate the … elastically can suppress virtually all fluctuations without varying the mean loads. The effect of the hydrodynamic and blade's inertia, the material damping, and the radial shear stress, …
- 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:
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 …
- Book Chapter:
Salter
… This paper describes the work of the Edinburgh group on their duck. It reviews the techniques used to improve device productivity by controlling both power take-off and mounting-movement. It outlines the results of a test programme on long compliant spines and discusses costing methodology. Some future …
- 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 …
- 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:
Jeffery et al.
… Energy system scenarios and modelling exercises may under-represent the learning potential of emerging technologies such as marine energy. The research described here was devised to represent this potential, and thereby explore the possible role of marine energy in future energy systems. The paper describes a scenario for the accelerated development of marine energy technology, and the incorporation of this scenario into wider scenarios of UK …
- Journal Article:
Mueller and Wallace
… This paper describes some of the key challenges to be met in the development of marine renewable energy technology, from its present prototype form to being a widely deployed contributor to future energy supply. Since 2000, a number of large-scale wave and tidal current prototypes have been demonstrated around the world, but …
- Journal Article:
de Andres et al.
… The purpose of this work is to provide an innovative tool based on the classic Levelised Cost of Energy (LCOE) which gives an overview of the limits for the technical parameters of Wave Energy Converters (WECs). In this case, the …
- Journal Article:
Iyer et al.
… government and devolved administrations. Attention has been drawn to this resource as a number of locations with high tidal current velocity have recently been leased by the Crown Estate for … velocity is too low for any power generation. However, it has been proposed that a portfolio of diverse sites located around the UK will deliver a firm aggregate output due to the relative phasing of the tidal signal around the coast. This paper analyses whether firm tidal power is feasible …
- Journal Article:
Bucher and Couch
… One of the key challenges in marine energy is to achieve funding for commercial-scale project … the necessary capital investment, the expected profit margins, and the corresponding cost of capital. The paper examines this relationship for tidal current schemes and provides a method … de-risk early-stage project initiatives. The possibility to select a preferred ratio of ‘capital investment’ to ‘profit’ widens the circle of potential investors and accelerates the …
- 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:
Noble et al.
… scale model testing is an important development tool, used extensively to study the behaviour of marine devices, vessels and structures in a controlled environment prior to deployment at sea. … renewable energy devices has been published over the past decade, it has limitations in terms of advanced environmental conditions for testing. The body of existing guidance is reviewed, and initial suggestions offered for additional test conditions …
- Journal Article:
Sutherland et al.
… In particular, the spatial and temporal variation must be well understood. FloWave is a state-of-the-art test facility with the ability to produce multi-directional waves and currents. This … throughout the tank using an ADV. The goal is to provide a comprehensive characterisation of the flow in the tank, in a robust and repeatable manner. These flow parameters are then … measurements for context. The turbulence intensities are normally distributed in the range of 5–11% and integral lengthscales were log-normally distributed over a 0.18–0.41 m range across …
- 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:
Rahman and Venugopal
… This paper presents a detailed parametric analysis on various input parameters of two different numerical models, namely Telemac3D and Delft3D, used for the simulation of tidal current flow at potential tidal energy sites in the Pentland Firth in Scotland. The motivation behind this work is to investigate the influence of the input parameters on the above 3D models, as the majority of past research has mainly …
- Journal Article:
Sousounis et al.
… where the wave energy resource is the highest; using large devices to generate hundreds of kilowatts of power. However, it is possible to generate power from low power waves using smaller wave … coastal or island communities which are off-grid. This study introduces wave-to-wire modelling of wave energy arrays for off-grid systems using low power permanent-magnet linear generators …
- 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 …
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