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\begin{document}

\title{DeepCwind Semi-Submersible Floating Offshore Wind Turbine Platform with
Nonlinear Multi-Segment Catenary Mooring Line and Intermediate Buoy}



\author[1]{mohammad motallebi}%
\author[1]{Hassan Ghassemi}%
\affil[1]{Affiliation not available}%


\vspace{-1em}



  
  \date{May 10, 2024}


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\begin{abstract}
In this paper, with the purpose of improving the mechanical behavior of
DeepCwind semi-submersible floating offshore wind turbine (FOWT)
platform mooring lines, nonlinear catenary cables of platform are
divided into multi-segments and intermediate buoy. The mathematical
formulations of the dynamic equation acted on the cable with buoys are
described. Present study is employed to the OC4-DeepCwind
semi-submersible FOWT platform. It is designed for 200-meter water depth
with mooring lines consist of three catenary steel chain cables that
have an angle of 120 degrees to each other. The dynamic response of
multi-segment catenary mooring line with different buoys radiuses and
different positions along the cables were investigated. The full-scale
platform was modeled in ANSYS-AQWA software and the simulations are
performed in harsh offshore. The tension, strain, anchor uplift, cable
uplift for different buoy radiuses and its position along cable are
presented and discussed. Moreover, platform motions at three directions
(surge, heave and pitch) are also analyzed. It is concluded that by
correct selection of the buoy volume and position along cable, the
tension of the cable may be reduced up to 45\%. By incorrect selection
of the buoy, the results will cause adverse effects.%
\end{abstract}%



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