Numerical modelling and dynamic response analysis of a 10 MW semi-submersible floating offshore wind turbine subjected to ship collision loads
نویسندگان
چکیده
The number of installed offshore wind turbines is continuously growing worldwide in recent years. Offshore farms are generally located near the coast close to traffic lanes and exposed risk collisions from visiting passing ships. Potential consequences may vary local structural damage detachment turbine nacelles rotors, even tower collapse capsizing platform, causing significant economic loss fatalities. This paper investigates ship collision responses a semi-submersible floating (FOWT), i.e. OO-STAR floater with DTU 10 MW blades, using nonlinear finite element code USFOS. made post-tensioned concrete designed by Dr. techn. Olav Olsen. striking ships selected be modern supply vessel 7500 tons shuttle tanker 150,000 tons, representing respectively service/coastal merchant vessels large vessels. Modelling FOWT USFOS described detail including floater, blade, tower, mooring system. modelled hydrodynamic loads include buoyancy motion induced radiation Morrison equation. effects external waves currents assumed small ignored all directions. Eigenmode analysis model performed verify established model. Global response analyses were both parked operating conditions. resistance as springs containing force displacement curves simulated LS-DYNA. In conditions, introduced thrust torque rotate blades. changes upstream speeds rotor/wake interactions during neglected. results discussed respect energy absorption FOWT, global motions, nacelle accelerations, clearance, vibrations,
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ژورنال
عنوان ژورنال: Renewable Energy
سال: 2022
ISSN: ['0960-1481', '1879-0682']
DOI: https://doi.org/10.1016/j.renene.2021.12.002