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- Report:
Payne
… Experimental tank testing is a key aspect of wave energy conversion research. The performance of designs can be assessed in an accessible … document is based on tank testing practices that have been developed over the years at the University of Edinburgh. As such it is focused on the use of equipment that has been developed by the …
- Journal Article:
Gambuzza et al.
… and non uniform, resulting in undesirable load fluctuations on the blades and the drive train of turbines. A passive morphing blade concept capable to reduce the load fluctuations without … simulations (Pisetta et al., 2022). In this paper, we present the first demonstration of this morphing blade concept, through experimental tests on a 1.2-m diameter turbine. We show … in the root-bending moment, thrust and torque are consistently reduced over a broad range of tip-speed ratios. This work also highlights some critical design aspects of morphing blades. …
- 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 …
- 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 …
- 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:
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 …
- 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 …
- Journal Article:
Salter
… laboratory techniques and results from the first work on wave energy, which led to the Edinburgh duck. It then describes some of the work done on later devices at Edinburgh University. Some of the results and ideas for power conversion, component testing, and …
- 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:
Pascal and Bryden
… This paper presents a PhD project aimed to improve the reliability of production estimation of Wave Energy Converter from the performace description and the statistical description of a wave climate. So far, a review of the different spectral parameters has been done. The …
- Journal Article:
Martinez et al.
… deployment stage and costs need to be reduced to improve the long term economic viability of the sector. High costs of tidal turbines are, in part, the result of load uncertainties, which … for a 1:15 scale model tested in the FloWave circular, combined wave and current basin at the University of Edinburgh (UK). Three different flow directions were tested and each of them were also combined …
- 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:
Sellar et al.
… Marine energy converters will require the implementation of control strategies to achieve viability in some cases and maximise profitability in most. … require distributed information on the wave field in which the device resides. A novel method of obtaining this data is investigated using a lattice of treated optical fibres constrained on a flexible substrate and fitted with floatation aids. By …
- Conference Paper:
Child and Venugopal
… A method is presented to analyse wave interactions with an array of simplified wave energy devices. The problem is formulated in terms of a group of heaving vertical circular cylinders floating in the ocean, whose motion is damped by their …
- Journal Article:
Draycott et al.
… energy sector has challenging requirements related to the physical simulation of the ocean environment for the purpose of evaluating energy generating technologies. In this paper the demands of the wave and tidal energy sectors are considered, with measurement and characterisation of the …
- Conference Paper:
Pawitan et al.
… The development of oscillating water column (OWC) wave energy converter (WEC) has been very extensive in the last … experiment involves a small-scale physical model, pressure transducer, and wave gauges in the University of Edinburgh long wave flume facility. The results show that sloshing is more likely to occur in the …
- 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 …
- 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:
Medina-Lopez et al.
… reduces and the flow phase alters with respect to the ideal gas case. Accurate prediction of efficiency is essential for the optimal design and management of OWC wave energy converters. … 10.1016/j.energy.2017.06.164 …
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