MaRINET2 Tidal Energy Round Robin Tests—Performance Comparison of a Horizontal Axis Turbine Subjected to Combined Wave and Current Conditions

Type Article
Date 2020-06
Language English
Author(s) Gaurier BenoitORCID1, Ordonez-Sanchez Stephanie2, Facq Jean-Valery1, Germain GregoryORCID1, Johnstone Cameron2, Martinez Rodrigo2, Salvatore Francesco3, Santic Ivan3, Davey Thomas4, Old Chris4, Sellar Brian4
Affiliation(s) 1 : IFREMER, MetOcean Laboratory, 150 Quai Gambetta, 62 200 Boulogne-sur-mer, France
2 : ESRU, Department of Mechanical & Aerospace Engineering, University of Strathclyde, James Weir Building, Montrose Street, Glasgow G1 1XJ, UK
3 : CNR-INM, National Research Council, Marine Technology Research Institute, Via di Vallerano 139, 00128 Rome, Italy
4 : FLOWAVE Ocean Energy Research Facility, University of Edinburgh, Max Born Crescent, Edinburgh EH9 3BF, UK
Source Journal Of Marine Science And Engineering (2077-1312) (MDPI AG), 2020-06 , Vol. 8 , N. 6 , P. 463 (28p.)
DOI 10.3390/jmse8060463
Note This article belongs to the Special Issue Marine Renewables–Infrastructures and Physical Testing
Keyword(s) marine energy, wave and current interactions, Round Robin Tests, flow measurements, horizontal axis tidal turbine
Abstract

This Round Robin Test program aims to establish the influence of the combined wave and current effect on the power capture and performance of a generic tidal turbine prototype. Three facilities offering similar range of experimental conditions have been selected on the basis that their dimensions along with the rotor diameter of the turbine translate into low blockage ratio conditions. The performance of the turbine shows differences between the facilities up to 25% in terms of average power coefficient, depending on the wave and current cases. To prevent the flow velocity increasing these differences, the turbine performance coefficients have been systematically normalized using a time-average disc-integrated velocity, accounting for vertical gradients over the turbine swept area. Differences linked to blockage effects and turbulence characteristics between facilities are both responsible for 5 to 10% of the power coefficient gaps. The intrinsic differences between the tanks play a significant role as well. A first attempt is given to show how the wave-current interaction effects can be responsible for differences in the turbine performance. In these tanks, the simultaneous generation of wave and current is a key part often producing disruptions in both of these flow characteristics

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Gaurier Benoit, Ordonez-Sanchez Stephanie, Facq Jean-Valery, Germain Gregory, Johnstone Cameron, Martinez Rodrigo, Salvatore Francesco, Santic Ivan, Davey Thomas, Old Chris, Sellar Brian (2020). MaRINET2 Tidal Energy Round Robin Tests—Performance Comparison of a Horizontal Axis Turbine Subjected to Combined Wave and Current Conditions. Journal Of Marine Science And Engineering, 8(6), 463 (28p.). Publisher's official version : https://doi.org/10.3390/jmse8060463 , Open Access version : https://archimer.ifremer.fr/doc/00635/74735/