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	Provedor de dados ArchiMer (5) Autor Drevet, Jean-baptiste (5) Germain, Gregory (5) Delacroix, Sylvain (4) Deporte, Astrid (3) Gaurier, Benoit (3) Déporte, Astrid (2) Trasch, Martin (2) Träsch, Martin (2) Davies, Peter (1) Mais... Palavra-chave Fluid-structure interaction (3) Flume tank (3) Marine renewable energy (2) Power take-off (2) Tidal energy converter (2) Marine Renewable Energy (1) Power Take-Off (1) Renewable energy (1) Slender body theory (1) Tidal Energy (1) Tidal energy (1) Undulating membrane (1) Undulation (1) Wake characteristics (1) Wave-current interaction (1) Mais... Tipo do documento Text (5) Ano 2020 (2) 2019 (1) 2018 (1) 2012 (1) País France (5) Idioma Inglês (4) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Power estimates of an undulating membrane tidal energy converter ArchiMer 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 Analytical linear modelization of a buckled undulating membrane tidal energy converter ArchiMer 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 Wake characterization of an undulating membrane tidal energy converter ArchiMer Träsch, Martin; Déporte, Astrid; Delacroix, Sylvain; Germain, Gregory; Gaurier, Benoit; Drevet, Jean-baptiste. Most of the research done on tidal energy focuses on marine current turbines. Therefore, tidal turbine’s wake is well-documented. The tidal energy converter studied here is based on the fluid-structure interactions that occur between a flexible membrane and an axial flow, resulting in an undulating motion that can be used to harvest energy. This device’s performance had been studied but it is the first time its wake is experimentally characterized from two-dimensional Particle Image Velocimetry (PIV) measurements. PIV is synchronized with a motion tracking system that gives information on trajectory and power conversion. Wake measurement gives access to velocity deficit, turbulence intensity and vorticity. Three configurations are tested in order to... Tipo: Text Palavras-chave: Marine Renewable Energy; Tidal Energy; Undulation; Power Take-Off; Wake characteristics; Flume tank. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00631/74302/73941.xml Étude d’une membrane ondulante pour la récupération de l’énergie des courants marins ArchiMer Deporte, Astrid; Germain, Gregory; Drevet, Jean-baptiste; Davies, Peter. This project deals with the study of the mechanical behavior of a wavering membrane used to collect marine current energy. We give first a description of means and method used to characterize our system. Then the results of the experiments on a one to sixth prototype are presented. In parallel, a numerical study is performed. This modelling and experiments permit to confirm the efficiency of the wavering membrane. Tipo: Text Ano: 2012 URL: http://archimer.ifremer.fr/doc/00141/25199/23308.pdf Dynamic behaviour of an undulating membrane tidal energy converter under wave and current loading ArchiMer Träsch, Martin; Delacroix, Sylvain; Déporte, Astrid; Drevet, Jean-baptiste; Gaurier, Benoit; Germain, Gregory. The dynamic behaviour of an undulating tidal energy converter under wave and current loadings is studied. Therefore, a small scale prototype of a damped pre-stressed undulating membrane is tested in a wave and current recirculatory tank. The membrane’s dynamic profile and hydrodynamic forces are measured synchronously with the surface elevation for both regular and irregular waves in current direction. Spectrum analysis reveals that the response to wave loading depends on the wave frequency and is reduced by damping-type power take-off. Coupling between the wave frequency and the main undulation frequency or its harmonics is also observed. An increase of 30% of the forces must be foreseen in case of wave condition in the tested range. Tipo: Text Palavras-chave: Fluid-structure interaction; Renewable energy; Tidal energy; Undulating membrane; Flume tank; Wave-current interaction. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00623/73485/72834.pdf Registros recuperados: 5 Primeira ... 1 ... Última

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