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tri floater model tests 300 200GustoMSC has recently completed model tests on its Tri-Floater, a semi-submersible floater capable of hosting large wind turbines. The tests were performed at the Océanide wave basin in South East France on a 1:50 scale model of the Tri-Floater hosting the 15 MW NREL reference wind turbine. The floater was subjected to simultaneous wind, wave and current loading in the wave basin.
 
The Tri-Floater model was subjected to a wide range of environmental conditions to demonstrate the suitability of the design for most of the floating wind sites currently being considered. These included operational conditions which the wind turbine would normally see during its lifetime as well as extreme conditions which it would have to endure during storms. An extreme sea state with a significant wave height of 13.5 m and wind speed at hub height of 190 km/h was tested. The Tri-floater successfully ‘passed’ this test.
 
Besides representing actual site conditions in the basin, a large set of more fundamental tests were performed, investigating various hydrodynamic properties of the floater in greater detail. The numerical models of the Tri-Floater have been calibrated based on these results.
 
With the model test campaign completed and numerical models validated, the Tri-Floater design has reached Technology Readiness Level 4: “technology validated in lab”.
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