Consulta: subjectFacets:"Marine renewable energy"
Registros recuperados: 9
Data/hora: 01/06/2024 04:44:04

Evaluating Mooring Line Test Procedures through the Application of a Round Robin Test Approach
Provedor de dados: 5
Autores: Khalid, Faryal; Davies, Peter; Halswell, Peter; Lacotte, Nicolas; Thies, Philipp R.; Johanning, Lars.
Innovation in materials and test protocols, as well as physical and numerical investigations, is required to address the technical challenges arising due to the novel application of components from conventional industries to the marine renewable energy (MRE) industry. Synthetic fibre ropes, widely used for offshore station-keeping, have potential application in the MRE industry to reduce peak mooring line loads. This paper presents the results of a physical characterisation study of a novel hybrid polyester-polyolefin rope for MRE mooring applications through a round robin testing (RRT) approach at two test facilities. The RRT was performed using standard guidelines for offshore mooring lines and the results are verified through the numerical modelling of...
Tipo: Text
Palavras-chave: Synthetic fibre ropes; Testing infrastructure; Round robin testing; Rope modelling; Mooring components; Marine renewable energy.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00634/74605/74493.pdf

Power estimates of an undulating membrane tidal energy converter
Provedor de dados: 5
Autores: Trasch, Martin; Deporte, Astrid; Delacroix, Sylvain; Drevet, Jean-baptiste; Gaurier, Benoit; Germain, Gregory.
An experimental study of an undulating membrane based on the Eel Energy device is presented in this paper. This system uses interaction between a semi-rigid plate and an axial flow to generate undulation. At full scale, the deformation of the structure is then converted into electrical power using linear electromagnetic generators. In order to simulate the power take-off on a 1/20th scale prototype, hydraulic dampers are located all over the length of the device. The dampers have non-linear behaviour. A representative damping parameter have been introduced to study their impact. Results are presented in function of fluid velocity and damping adjustment. Undulation mode, frequency and forces on the structure are described. Results show that fluid velocity...
Tipo: Text
Palavras-chave: Marine renewable energy; Tidal energy converter; Power take-off; Fluid-structure interaction; Flume tank.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00411/52205/53359.pdf

Les énergies marines renouvelables répondent-elles au modèle d’économie de la fonctionnalité ?
Provedor de dados: 5
Autores: Lalancette, Soazig; Le Floc H, Pascal; Le Gallic, Bertrand.
This article seeks to estimate the relevance of the service economy applied to marine renewable energy projects. This study is based on stakeholder contributions in public debate in Saint-Brieuc offshore wind farm project (France). We seek to analyze stakeholder perspectives through an application of a textual analysis on contributions (cahiers d’acteurs). Textual analysis reveals two main results, the first one turns to social and economic question with the impact on the territory, in particularly the employment and the training. The second issue concerns the energy efficiency of marine renewable technologies. For each of these issues, the discussion try to give a perspective regard to service economy theory and discuss about the relevance of service...
Tipo: Text
Palavras-chave: Économie de la fonctionnalité; Énergie marine renouvelable; Analyse textuelle; Éolien en mer; Débat public; Service economy; Marine renewable energy; Textual analysis; Offshore wind; Public debate.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00636/74856/75255.pdf

A review of potential impacts of submarine power cables on the marine environment: Knowledge gaps, recommendations and future directions
Provedor de dados: 5
Autores: Taormina, Bastien; Bald, Juan; Want, Andrew; Thouzeau, Gerard; Lejart, Morgane; Desroy, Nicolas; Carlier, Antoine.
Submarine power cables (SPC) have been in use since the mid-19th century, but environmental concerns about them are much more recent. With the development of marine renewable energy technologies, it is vital to understand their potential impacts. The commissioning of SPC may temporarily or permanently impact the marine environment through habitat damage or loss, noise, chemical pollution, heat and electromagnetic field emissions, risk of entanglement, introduction of artificial substrates, and the creation of reserve effects. While growing numbers of scientific publications focus on impacts of the marine energy harnessing devices, data on impacts of associated power connections such as SPC are scarce and knowledge gaps persist. The present study (1)...
Tipo: Text
Palavras-chave: Submarine power cables; Marine renewable energy; Environmental impacts; Ecosystem functioning; Benthic habitats.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00454/56542/58330.pdf

Génération de bases de données océano-météorologiques pour l'élaboration de climatologies adaptées au dimensionnement des structures en mer
Provedor de dados: 5
Autores: Boudiere, Edwige; Maisondieu, Christophe; Ardhuin, Fabrice; Accensi, Mickael; Pineau-guillou, Lucia; Lepesqueur, Jeremy.
The number of Marine Renewable Energy projects has rapidly raised over the last decades. Those require a refined description of environmental conditions, such as sea states, for resource assessments as well as for the conception of the Marine Energy Converters. Engineering studies require long-term data sets so as to assess temporal variability and extreme events of sea states at the scale of the implantation sites.,As a support to its research studies on Marine Renewable Energy, Ifremer is building a specific hindcast database, running the wave model WAVEWATCH III® on an unstructured grid. The wave model extends over the area from the South of the North Sea to the Bay of Biscay with a high spatial resolution and covers a 16 years period from 1996 to 2012....
Tipo: Text
Palavras-chave: Spectre directionnel; Hindcast; WAVEWATCH III®; Énergie marine renouvelable; Directional spectra; Hindcast; WAVEWATCH III®; Marine renewable energy.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00203/31418/29813.pdf

Caractérisation expérimentale et numérique du comportement hydrodynamique d’une hydrolienne à membrane ondulante
Provedor de dados: 5
Autores: Trasch, Martin.
The thesis presented in this document deals with the caracterisation of the behaviour of an undulating membrane tidal energy converter. This kind of device uses the flutter instabilities occurring between a semi-rigid pre-strained membrane and a fluid flow in order to convert the sea currents energy. Above a certain critical flow speed, the structure ondulates, thus activating the linear converters fixed on it. In order to study this system, an experimental model is developped and tested in a flume tank. The power conversion system is simulated by hydraulic dampers. The membrane’s dynamics is analysed in many configurations through trajectory and force measurements, and leads to a parametric study. More realistic flow conditions are also studied, such as...
Tipo: Text
Palavras-chave: Énergies marines renouvelables; Hydrolienne; Interaction fluidestructure; Instabilité de flottement; Essais expérimentaux; Particle Image Velocimetry; Modélisation numérique; Méthode vortex; Éléments finis; Corotationnel; Houle; Effet d’échelle; Marine renewable energy; Tidal energy converter; Power takeoff; Fluid-structure interaction; Flutter instability; Experimental trial; Particle Image Velocimetry; Numerical model; Vortex method; Corotational finite elements; Surface wave; Scale effect.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00490/60185/63527.pdf

Analytical linear modelization of a buckled undulating membrane tidal energy converter
Provedor de dados: 5
Autores: Trasch, Martin; Deporte, Astrid; Delacroix, Sylvain; Germain, Gregory; Drevet, Jean-baptiste.
This paper presents an analytical linear model developed to study the behaviour of a buckled membrane tidal energy converter. The Euler beam theory and the elongated body theory are used for the fluid structure interaction formulation. The effect of electromechanical converters used to convert the undulating motion into electrical energy is reproduced by adding a term equivalent to viscous material damping. The influence of compression force, flaps and hanging conditions is studied, as well as the effects of simulated power take-off through internal damping. The system's behaviour is characterized by undulating mode, critical flow velocity, motion frequency and amplitude. The model shows good agreement in terms of frequency and satisfactory results for the...
Tipo: Text
Palavras-chave: Marine renewable energy; Tidal energy converter; Power take-off; Fluid-structure interaction; Slender body theory.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00445/55631/57277.pdf

A suitable metocean hindcast database for the design of Marine energy converters
Provedor de dados: 5
Autores: Boudiere, Edwige; Maisondieu, Christophe; Ardhuin, Fabrice; Accensi, Mickael; Pineau-guillou, Lucia; Lepesqueur, Jeremy.
Resource assessment as well as characterisation of site climatologies for the design of Marine Energy Converters requires data bases allowing an accurate description of the environmental forcing, especially waves and sea-states, on a high resolution grid. As a support to its research activities related to the development of marine renewable energies, Ifremer is building a specific hindcast data set for the assessment of sea-states climatologies. The main features of this database, built running an up-to-date configuration of the WaveWatch III® wave model on an unstructured grid extending from the South of the North Sea to the Bay of Biscay are presented here. Attention is given to the parameterization and forcing as well as the specific output data sets...
Tipo: Text
Palavras-chave: Directional spectra; Hindcast; WAVEWATCH III®; Marine renewable energy.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00164/27524/25710.pdf

The Merits of Loop Analysis for the Qualitative Modeling of Social-Ecological Systems in Presence of Offshore Wind Farms
Provedor de dados: 5
Autores: Niquil, Nathalie; Scotti, Marco; Fofack-garcia, Rhoda; Haraldsson, Matilda; Thermes, Maud; Raoux, Aurore; Le Loc'H, François; Mazé, Camille.
Tipo: Text
Palavras-chave: Social-ecosystem modeling; Loop analysis; Adaptive management; Sensitivity analysis; Marine renewable energy.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00682/79409/81957.pdf