International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine

  • Hong, Sinpyo (Global Core Research Center for Ships and Offshore Plants, Pusan National University) ;
  • Lee, Inwon (Global Core Research Center for Ships and Offshore Plants, Pusan National University) ;
  • Park, Seong Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Cheolmin (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Chun, Ho-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lim, Hee Chang (School of Mechanical Engineering, Pusan National University)
  • Received : 2014.04.15
  • Accepted : 2015.03.26
  • Published : 2015.05.31
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Abstract

An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine is presented. The effects of the Center of Gravity (COG), mooring line spring constant, and fairlead location on the turbine's motion in response to regular waves are investigated. Experimental results show that for a typical mooring system of a SPAR buoy-type Floating Offshore Wind Turbine (FOWT), the effect of mooring systems on the dynamics of the turbine can be considered negligible. However, the pitch decreases notably as the COG increases. The COG and spring constant of the mooring line have a negligible effect on the fairlead displacement. Numerical simulation and sensitivity analysis show that the wind turbine motion and its sensitivity to changes in the mooring system and COG are very large near resonant frequencies. The test results can be used to validate numerical simulation tools for FOWTs.

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References

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