Impact of turbulence on power production ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Impact of turbulence on power production by a free-stream tidal turbine in real sea conditions
Auteur(s) :
Sentchev, Alexei [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Thiébaut, Maxime [Auteur]
Schmitt, François [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Thiébaut, Maxime [Auteur]
Schmitt, François [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Titre de la revue :
Renewable Energy
Pagination :
1932-1940
Éditeur :
Elsevier
Date de publication :
2020-03
ISSN :
0960-1481
Mot(s)-clé(s) en anglais :
Tidal stream energy
Turbine performance
Turbulence
Velocity measurements
Turbine performance
Turbulence
Velocity measurements
Discipline(s) HAL :
Physique [physics]/Physique [physics]/Analyse de données, Statistiques et Probabilités [physics.data-an]
Science non linéaire [physics]/Dynamique Chaotique [nlin.CD]
Physique [physics]/Matière Condensée [cond-mat]/Mécanique statistique [cond-mat.stat-mech]
Physique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
Planète et Univers [physics]
Planète et Univers [physics]/Océan, Atmosphère
Science non linéaire [physics]/Dynamique Chaotique [nlin.CD]
Physique [physics]/Matière Condensée [cond-mat]/Mécanique statistique [cond-mat.stat-mech]
Physique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
Planète et Univers [physics]
Planète et Univers [physics]/Océan, Atmosphère
Résumé en anglais : [en]
An experiment was performed to study the power production by a Darrieus type turbine of the Dutch company Water2Energy in a tidal estuary. Advanced instrumentation packages, including mechanical sensors, acoustic Doppler ...
Lire la suite >An experiment was performed to study the power production by a Darrieus type turbine of the Dutch company Water2Energy in a tidal estuary. Advanced instrumentation packages, including mechanical sensors, acoustic Doppler current profiler (ADCP), and velocimeter (ADV), were implemented to measure the tidal current velocities in the approaching flow, to estimate the turbine performance and to assess the effect of turbulence on power production. The optimal performance was found to be relatively high (Cp ∼ 0.4). Analysis of the power time history revealed a large increase in magnitude of power fluctuations caused by turbulence as the flow velocity increases between 1 and 1.2 m/s. Turbulence intensity does not alone capture quantitative changes in the turbulent regime of the real flow. The standard deviation of velocity fluctuations was preferred in assessing the effect of turbulence on power production. Assessing the scaling properties of the turbulence, such as dissipation rate, , the integral lengthscale, , helped to understand how the turbulence is spatially organized with respect to turbine dimensions. The magnitude of power fluctuations was found to be proportional to L and the strongest impact of turbulence on power generation is achieved when the size of turbulent eddies matches the turbine size.Lire moins >
Lire la suite >An experiment was performed to study the power production by a Darrieus type turbine of the Dutch company Water2Energy in a tidal estuary. Advanced instrumentation packages, including mechanical sensors, acoustic Doppler current profiler (ADCP), and velocimeter (ADV), were implemented to measure the tidal current velocities in the approaching flow, to estimate the turbine performance and to assess the effect of turbulence on power production. The optimal performance was found to be relatively high (Cp ∼ 0.4). Analysis of the power time history revealed a large increase in magnitude of power fluctuations caused by turbulence as the flow velocity increases between 1 and 1.2 m/s. Turbulence intensity does not alone capture quantitative changes in the turbulent regime of the real flow. The standard deviation of velocity fluctuations was preferred in assessing the effect of turbulence on power production. Assessing the scaling properties of the turbulence, such as dissipation rate, , the integral lengthscale, , helped to understand how the turbulence is spatially organized with respect to turbine dimensions. The magnitude of power fluctuations was found to be proportional to L and the strongest impact of turbulence on power generation is achieved when the size of turbulent eddies matches the turbine size.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
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- 2020_Sentchev_RE.pdf
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