ORCID Profile
0000-0001-6798-3468
Current Organisation
University Of Strathclyde
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Publisher: MDPI AG
Date: 10-09-2021
DOI: 10.3390/JMSE9090988
Abstract: This paper documents the round robin testing c aign carried out on a floating wind turbine as part of the EU H2020 MaRINET2 project. A 1/60th scale model of a 10 MW floating platform was tested in wave basins in four different locations around Europe. The tests carried out in each facility included decay tests, tests in regular and irregular waves with and without wind thrust, and tests to characterise the mooring system as well as the model itself. For the tests in wind, only the thrust of the turbine was considered and it was fixed to pre-selected levels. Hence, this work focuses on the hydrodynamic responses of a semi-submersible floating foundation. It was found that the global surge stiffness was comparable across facilities, except in one case where different azimuth angles were used for the mooring lines. Heave and pitch had the same stiffness coefficient and periods for all basins. Response Amplitude Operators (RAOs) were used to compare the responses in waves from all facilities. The shape of the motion RAOs were globally similar for all basins except around some particular frequencies. As the results were non-linear around the resonance and cancellation frequencies, the differences between facilities were magnified at these frequencies. Surge motions were significantly impacted by reflections leading to large differences in these RAOs between all basins.
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 05-2015
Publisher: Elsevier BV
Date: 03-2013
Publisher: Elsevier BV
Date: 11-2015
Publisher: Elsevier BV
Date: 07-2016
Publisher: Elsevier BV
Date: 11-2015
Publisher: MDPI AG
Date: 18-09-2021
DOI: 10.3390/JMSE9091030
Abstract: This paper introduces metrics developed for analysing irregular wave test results from the round robin testing c aign carried out on a floating wind turbine as part of the EU H2020 MaRINET2 project. A 1/60th scale model of a 10 MW floating platform was tested in wave basins in four different locations around Europe. The tests carried out in each facility included decay tests, tests in regular and irregular waves with and without wind thrust, and tests to characterise the mooring system as well as the model itself. While response litude operations (RAOs) are a useful tool for assessing device performance in irregular waves, they are not easy to interpret when performing an inter-facility comparison where there are many variables. Metrics that use a single value per test condition rather than an RAO curve are a means of efficiently comparing tests from different basins in a more heuristic manner. In this research, the focus is on using metrics to assess how the platform responds with varying wave height and thrust across different facilities. It is found that the metrics implemented are very useful for extracting global trends across different basins and test conditions.
Publisher: Elsevier BV
Date: 04-2016
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Alexander Day.