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- Report:
Smith
… environment, marine ecosystems, acoustic propagation and marine mammal behaviour. The remit of the project included wave and tidal energy and, unusually for a project of this nature, offshore wind. Wind was included to enable contrasts between levels of industry maturity and scales of deployment, thus providing a wide range of potential case …
- Thesis:
Kreimair
… power assessment, uncertainties arise from model assumptions and the inexact specification of physical and numerical model parameters. Combined, such uncertainties can greatly affect power estimates for a given site. The thesis examines the effects of bed roughness and turbine drag uncertainties on turbine power estimates. An analytic model is developed for transfer of bed friction uncertainty to power extracted from turbines in a strait, representative of a …
- 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 …
- 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:
Kenny
… to global energy security and sustainability. However, the high initial Levelised Cost Of Energy (LCOE) of MRE, as well as issues with survivability and reliability, present challenges for its … This is achieved by monitoring critical subsystems for the detection and prediction of faults and allowing for maintenance personnel to take mitigating action prior to subsystem or …
- Journal Article:
MacGillivray et al.
… develops as it matures. In this paper we model the technological trajectory for a number of energy technologies by analysing technological change (characterised by unit-level capacity … using sigmoidal 5 Parameter Logistic (5PL) functions, observed and reported as a function of unit deployment. Application of 5PL functions allows inference of technology development milestones, such as initiation of …
- 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 …
- Thesis:
Reynolds
… A novel control strategy is proposed for the control of two fixed pitch tidal turbines subjected to discrete flow speeds whilst interconnected in an … (OPEX) incurred through offshore equipment failure. An added benefit is utilisation of a single shared export cable for both turbines, thereby reducing Capital Expenditure (CAPEX). By lowering the cost of installing and maintaining an array, it is anticipated that the commercial viability of the …
- 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 …
- Report:
Talukdar and Jeffrey
… a challenging year, 2020 saw continuous innovative cross-border collaborations, deployment of state-of-the-art projects and offshore tests being undertaken for the ocean energy sector. The UK is … arrays in the world and has already deployed more wave and tidal energy devices than the rest of the world [1]. The UK ocean energy sector continued to reach new milestones this year, with …
- 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 …
- 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 …
- 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 …
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