Oct 8 2021

Research paper: The impact of the seabed morphology on turbulence generation in a strong tidal stream

2021-10-08T12:02:56+01:00October 8, 2021|

Highly energetic turbulent flow structures are observed in strong tidal flows. If they are suspected to result from interactions between the flow and the seabed morphology, the physical processes involved in their generation, as well as their impact on the structure of the flow, are not yet fully understood. Here, the lattice-Boltzmann method is used

Oct 8 2021

Research paper: On the spatial variability of the flow characteristics at a Tidal energy site: Case of the Raz Blanchard

2021-10-08T11:59:32+01:00October 8, 2021|

Tidal turbines will be installed in strongly turbulent flows. One of the main problems of turbine developers is to have a good knowledge of the flow before deploying the turbines. Indeed, a high loading frequency induced by turbulence could increase the blade fatigue and damage the turbines. Acoustic Doppler Current Profilers deployed at tidal sites

Oct 8 2021

Research paper: Turbulence characterisation during ebbing and flooding tides in the Raz Blanchard with large eddy simulations.

2021-10-08T11:56:12+01:00October 8, 2021|

The impact of the seabed morphology on the spatial variability of a strong tidal flow is investigated, at both flood and ebb tides, using large-eddy simulations. The simulations are performed over domains of about 0.5 km2, with a spatial resolution of 0.34 m and using a detailed bathymetry of 1 m resolution. For both simulations,

Oct 5 2021

Research paper: A review of the UK and British Channel Islands practical tidal stream energy resource

2021-10-05T12:51:52+01:00October 5, 2021|

This review provides a critical, multi-faceted assessment of the practical contribution tidal stream energy can make to the UK and British Channel Islands future energy mix. Evidence is presented that broadly supports the latest national-scale practical resource estimate, of 34 TWh/year, equivalent to 11% of the UK’s current annual electricity demand. The size of the

Oct 4 2021

Research paper: Cost modelling and design optimisation of tidal stream turbines

2021-10-05T10:35:44+01:00October 4, 2021|

A newly developed cost model for tidal stream turbines is presented. The model is based on (a) an existing tidal stream turbine cost model, (b) published CapEx data from an operational tidal stream turbine array, and (c) wind turbine cost data. The new cost model is utilised to establish cost-effective tidal stream turbine design, with

Oct 4 2021

Research paper: Assessment of Dependency of Unsteady Onset Flow and Resultant Tidal Turbine Fatigue Loads on Measurement Position at a Tidal Site

2021-10-04T15:32:45+01:00October 4, 2021|

This work determines the variation in the fatigue loading on a tidal turbine at two depth positions and two different locations within a site. Site data were obtained at the European Marine Energy Centre, EMEC, test facility in Scotland, which has been compiled at the University of Edinburgh. The turbine modelled is the 18m Diameter

Sep 21 2021

Research paper: Social perception and acceptance of Tidal Current Turbines (TCTs) Energy project – A case study of the Gulf of Morbihan, France.

2021-09-21T11:08:33+01:00September 21, 2021|

Abstract In 2019, renewable energies counted for 11,7% of primary energy consumption in France, behind nuclear power (40%), petroleum products (29%) and natural gas (16%). The production of renewable energies reaches 320TWh in 2019, only 0,2% of which comes from renewable marine energies. What about renewable marine energies and the social acceptance of their development

Aug 24 2021

Research paper: A review of component and system reliability in tidal turbine deployments

2021-08-24T15:15:20+01:00August 24, 2021|

Research paper: A review of component and system reliability in tidal turbine deployments Authors: Walker, S., Thies, P. R, College of Engineering and Physical Sciences, University of Exeter, Penryn Abstract: Tidal stream energy has the potential to contribute to global renewable energy generation, but this remains largely untapped. Technical developments have helped create a nascent

Jun 10 2021

Research paper: Efficient economic optimisation of large-scale tidal stream arrays

2021-06-10T16:56:49+01:00June 10, 2021|

Research paper:  Efficient economic optimisation of large-scale tidal stream arrays Authors: Z. L. Goss, D. S. Coles, S. C. Kramer, and M. D. Piggott Abstract: As the tidal energy industry moves from demonstrator arrays comprising just a few turbines to large-scale arrays made up of potentially hundreds of turbines, there is a need to optimise

May 4 2021

Research paper: Coupled flow-wave modelling for regional tidal site characterisation in the English Channel

2021-05-04T19:34:06+01:00May 4, 2021|

Research paper: Coupled flow-wave modelling for regional tidal site characterisation in the English Channel Authors: J. Hardwick, I. G. C. Ashton, E. Mackay, H. C. M. Smith & P. R. Thies Abstract: Numerical simulation is an essential tool to predict ocean conditions at tidal energy sites. Knowledge of flow velocity, water level and wave conditions

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