TY - JOUR
T1 - Round Robin Testing: Exploring Experimental Uncertainties through a Multifacility Comparison of a Hinged Raft Wave Energy Converter
AU - Davey, Thomas
AU - Sarmiento, Javier
AU - Ohana, Jérémy
AU - Thiebaut, Florent
AU - Haquin, Sylvain
AU - Weber, Matthieu
AU - Gueydon, Sebastien
AU - Judge, Frances
AU - Lyden, Eoin
AU - O’shea, Michael
AU - Gabl, Roman
AU - Jordan, Laura Beth
AU - Hann, Martyn
AU - Wang, Daming
AU - Collins, Keri
AU - Conley, Daniel
AU - Greaves, Deborah
AU - Ingram, David M.
AU - Murphy, Jimmy
PY - 2021/8/30
Y1 - 2021/8/30
N2 - The EU H2020 MaRINET2 project has a goal to improve the quality, robustness and accuracy of physical modelling and associated testing practices for the offshore renewable energy sector. To support this aim, a round robin scale physical modelling test programme was conducted to deploy a common wave energy converter at four wave basins operated by MaRINET2 partners. Test campaigns were conducted at each facility to a common specification and test matrix, providing the unique opportunity for intercomparison between facilities and working practices. A nonproprietary hinged raft, with a nominal scale of 1:25, was tested under a set of 12 irregular sea states. This allowed for an assessment of power output, hinge angles, mooring loads, and six-degree-of-freedom motions. The key outcome to be concluded from the results is that the facilities performed consistently, with the majority of variation linked to differences in sea state calibration. A variation of 5–10% in mean power was typical and was consistent with the variability observed in the measured significant wave heights. The tank depth (which varied from 2–5 m) showed remarkably little influence on the results, although it is noted that these tests used an aerial mooring system with the geometry unaffected by the tank depth. Similar good agreement was seen in the heave, surge, pitch and hinge angle responses. In order to maintain and improve the consistency across laboratories, we make recommendations on characterising and calibrating the tank environment and stress the importance of the device–facility physical interface (the aerial mooring in this case).
AB - The EU H2020 MaRINET2 project has a goal to improve the quality, robustness and accuracy of physical modelling and associated testing practices for the offshore renewable energy sector. To support this aim, a round robin scale physical modelling test programme was conducted to deploy a common wave energy converter at four wave basins operated by MaRINET2 partners. Test campaigns were conducted at each facility to a common specification and test matrix, providing the unique opportunity for intercomparison between facilities and working practices. A nonproprietary hinged raft, with a nominal scale of 1:25, was tested under a set of 12 irregular sea states. This allowed for an assessment of power output, hinge angles, mooring loads, and six-degree-of-freedom motions. The key outcome to be concluded from the results is that the facilities performed consistently, with the majority of variation linked to differences in sea state calibration. A variation of 5–10% in mean power was typical and was consistent with the variability observed in the measured significant wave heights. The tank depth (which varied from 2–5 m) showed remarkably little influence on the results, although it is noted that these tests used an aerial mooring system with the geometry unaffected by the tank depth. Similar good agreement was seen in the heave, surge, pitch and hinge angle responses. In order to maintain and improve the consistency across laboratories, we make recommendations on characterising and calibrating the tank environment and stress the importance of the device–facility physical interface (the aerial mooring in this case).
UR - https://pearl.plymouth.ac.uk/context/secam-research/article/1460/viewcontent/jmse_09_00946_v3.pdf
U2 - 10.3390/jmse9090946
DO - 10.3390/jmse9090946
M3 - Article
SN - 2077-1312
VL - 9
SP - 946
EP - 946
JO - Journal of Marine Science and Engineering
JF - Journal of Marine Science and Engineering
IS - 9
ER -