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Provedor de dados:  ArchiMer
País:  France
Título:  Wake characterization of an undulating membrane tidal energy converter
Autores:  Träsch, Martin
Déporte, Astrid
Delacroix, Sylvain
Germain, Gregory
Gaurier, Benoit
Drevet, Jean-baptiste
Data:  2020-07
Ano:  2020
Palavras-chave:  Marine Renewable Energy
Tidal Energy
Power Take-Off
Wake characteristics
Flume tank
Resumo:  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 identify the influence of the main adjustment parameters. Pre-stress increases the membrane vertical speed, leading to a more important vertical expansion of the wake. The power extraction slows down the membrane’s motion, thus limiting the wake’s length and intensity. The flume tank measurements suggest that the best location for a downstream device in a tidal farm would be in the same horizontal position, at 5 membrane’s length. In the open sea, the membrane interaction effects should not predominant.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier BV
Formato:  application/pdf
Fonte:  Applied Ocean Research (0141-1187) (Elsevier BV), 2020-07 , Vol. 100 , P. 102222 (12p.)
Direitos:  info:eu-repo/semantics/openAccess

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