3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake

Biofouling is an important factor to consider when calculating the energetic efficiency of tidal farms. Despite the fact that biofouling effects have been widely investigated in the past for naval applications, very few studies concern tidal turbines. This paper proposes a numerical approach to asse...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ilan Robin, Anne-Claire Bennis, Jean-Claude Dauvin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	marine renewable energy tidal energy fluid–structure interaction biofouling turbulence numerical modelling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/4eb241c4064d45bf95dfe2f0c003aee3
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4eb241c4064d45bf95dfe2f0c003aee3
record_format	dspace
spelling	oai:doaj.org-article:4eb241c4064d45bf95dfe2f0c003aee32021-11-25T18:05:07Z3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake10.3390/jmse91112882077-1312https://doaj.org/article/4eb241c4064d45bf95dfe2f0c003aee32021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1288https://doaj.org/toc/2077-1312Biofouling is an important factor to consider when calculating the energetic efficiency of tidal farms. Despite the fact that biofouling effects have been widely investigated in the past for naval applications, very few studies concern tidal turbines. This paper proposes a numerical approach to assess the impact of biofouling on tidal turbines, which is efficient for testing many configurations. Two turbulence models are tested (RANS k-<i>ω</i> SST and LES Smagorinsky) for the motionless blade case to validate them. Then we chose to use the Smagorinsky model for the case of a complete tidal turbine rotor with realistically fouled blades. The pressure coefficient is strongly affected by the barnacle in the motionless blade case and the power coefficient is slightly degraded in the complete rotor case. Motionless blade cases do not represent the real biofouling behaviour for two reasons. First, sessile species settle in the down flow part of the chord where their impact is less important. Then, the surrounding turbulence provoked by the blades rotation in the rotor case reduces the impact of biofouling. In the wake, biofouling generates small vortexes that propagate into the larger ones, causing them to spread their energy.Ilan RobinAnne-Claire BennisJean-Claude DauvinMDPI AGarticlemarine renewable energytidal energyfluid–structure interactionbiofoulingturbulencenumerical modellingNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1288, p 1288 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	marine renewable energy tidal energy fluid–structure interaction biofouling turbulence numerical modelling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	marine renewable energy tidal energy fluid–structure interaction biofouling turbulence numerical modelling Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Ilan Robin Anne-Claire Bennis Jean-Claude Dauvin 3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
description	Biofouling is an important factor to consider when calculating the energetic efficiency of tidal farms. Despite the fact that biofouling effects have been widely investigated in the past for naval applications, very few studies concern tidal turbines. This paper proposes a numerical approach to assess the impact of biofouling on tidal turbines, which is efficient for testing many configurations. Two turbulence models are tested (RANS k-<i>ω</i> SST and LES Smagorinsky) for the motionless blade case to validate them. Then we chose to use the Smagorinsky model for the case of a complete tidal turbine rotor with realistically fouled blades. The pressure coefficient is strongly affected by the barnacle in the motionless blade case and the power coefficient is slightly degraded in the complete rotor case. Motionless blade cases do not represent the real biofouling behaviour for two reasons. First, sessile species settle in the down flow part of the chord where their impact is less important. Then, the surrounding turbulence provoked by the blades rotation in the rotor case reduces the impact of biofouling. In the wake, biofouling generates small vortexes that propagate into the larger ones, causing them to spread their energy.
format	article
author	Ilan Robin Anne-Claire Bennis Jean-Claude Dauvin
author_facet	Ilan Robin Anne-Claire Bennis Jean-Claude Dauvin
author_sort	Ilan Robin
title	3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
title_short	3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
title_full	3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
title_fullStr	3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
title_full_unstemmed	3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake
title_sort	3d numerical study of the impact of macro-roughnesses on a tidal turbine, on its performance and hydrodynamic wake
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4eb241c4064d45bf95dfe2f0c003aee3
work_keys_str_mv	AT ilanrobin 3dnumericalstudyoftheimpactofmacroroughnessesonatidalturbineonitsperformanceandhydrodynamicwake AT anneclairebennis 3dnumericalstudyoftheimpactofmacroroughnessesonatidalturbineonitsperformanceandhydrodynamicwake AT jeanclaudedauvin 3dnumericalstudyoftheimpactofmacroroughnessesonatidalturbineonitsperformanceandhydrodynamicwake
_version_	1718411614804246528

3D Numerical Study of the Impact of Macro-Roughnesses on a Tidal Turbine, on Its Performance and Hydrodynamic Wake

Ejemplares similares