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Article

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

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
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(6), 463; https://doi.org/10.3390/jmse8060463
Received: 25 May 2020 / Revised: 19 June 2020 / Accepted: 20 June 2020 / Published: 24 June 2020
(This article belongs to the Special Issue Marine Renewables–Infrastructures and Physical Testing)
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. View Full-Text
Keywords: marine energy; wave and current interactions; Round Robin Tests; flow measurements; horizontal axis tidal turbine marine energy; wave and current interactions; Round Robin Tests; flow measurements; horizontal axis tidal turbine
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MDPI and ACS Style

Gaurier, B.; Ordonez-Sanchez, S.; Facq, J.-V.; Germain, G.; Johnstone, C.; Martinez, R.; Salvatore, F.; Santic, I.; Davey, T.; Old, C.; Sellar, B. MaRINET2 Tidal Energy Round Robin Tests—Performance Comparison of a Horizontal Axis Turbine Subjected to Combined Wave and Current Conditions. J. Mar. Sci. Eng. 2020, 8, 463. https://doi.org/10.3390/jmse8060463

AMA Style

Gaurier B, Ordonez-Sanchez S, Facq J-V, Germain G, Johnstone C, Martinez R, Salvatore F, Santic I, Davey T, Old C, Sellar B. 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. 2020; 8(6):463. https://doi.org/10.3390/jmse8060463

Chicago/Turabian Style

Gaurier, Benoît; Ordonez-Sanchez, Stephanie; Facq, Jean-Valéry; Germain, Grégory; 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" J. Mar. Sci. Eng. 8, no. 6: 463. https://doi.org/10.3390/jmse8060463

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