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<p>Floating wind turbines have emerged as a promising and innovative solution for sustainable energy. However, installing offshore wind turbines is challenging in harsh offshore conditions. To address these challenges, this paper examines a novel floating dock concept that can be a viable option for offshore wind turbine installation. A floating dock is designed to be self-supporting and plays an important role in the installation of spar foundations while also protecting from any harsh weather conditions. The current study examines the performance of a floating dock to facilitate the installation of a 15&#xa0;m wide spar foundation designed for offshore wind turbines, in particular in adverse offshore conditions i.e., without protected fjords. The motions (heave and pitch) significant during installation are simulated through free-decay tests using the computational fluid dynamics (CFD) program, as well as validated with the experimental data of a 1:70-scale model experiment. The “damping and natural frequency” values obtained are utilized along with commercial finite-element software to perform parametric analyses to obtain the diffraction responses for various dock diameters, dock heights, bilge tank heights, and gate opening angle effects. The results obtained indicate that the floating dock substantially reduces the motion of the spar platform by 22.5% and 23.6% in heave and pitch response amplitude operators (RAOs), respectively, enhancing weather window during turbine installation. The results attempt to strengthen the understanding of the floating dock-spar interaction and provide engineering insight into the installation of offshore wind turbines.</p>

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Investigations on response of floating dock with spar platform during installation

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • Soumyashree Pani,
  • Nilanjan Saha,
  • Sundaravadivelu Ranganathan

摘要

Floating wind turbines have emerged as a promising and innovative solution for sustainable energy. However, installing offshore wind turbines is challenging in harsh offshore conditions. To address these challenges, this paper examines a novel floating dock concept that can be a viable option for offshore wind turbine installation. A floating dock is designed to be self-supporting and plays an important role in the installation of spar foundations while also protecting from any harsh weather conditions. The current study examines the performance of a floating dock to facilitate the installation of a 15 m wide spar foundation designed for offshore wind turbines, in particular in adverse offshore conditions i.e., without protected fjords. The motions (heave and pitch) significant during installation are simulated through free-decay tests using the computational fluid dynamics (CFD) program, as well as validated with the experimental data of a 1:70-scale model experiment. The “damping and natural frequency” values obtained are utilized along with commercial finite-element software to perform parametric analyses to obtain the diffraction responses for various dock diameters, dock heights, bilge tank heights, and gate opening angle effects. The results obtained indicate that the floating dock substantially reduces the motion of the spar platform by 22.5% and 23.6% in heave and pitch response amplitude operators (RAOs), respectively, enhancing weather window during turbine installation. The results attempt to strengthen the understanding of the floating dock-spar interaction and provide engineering insight into the installation of offshore wind turbines.