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<p>Floating wind farm are a promising renewable energy source, but their maintenance and installation in offshore areas offer significant obstacles due to severe weather conditions. An innovative concept—a floating dock—has been offered as a viable option for installing spar-supported offshore wind turbines and their components in these farms. The floating dock is self-supporting and facilitates the maintenance of spar foundations and wind turbine components by sheltering them from unfavorable weather window. This paper studies the hydrodynamic response of such a system, focusing on the heave response of the floating dock using the finite element method with ANSYS-AQWA software. The numerical free decay experiments determine the damping matrix. The damping matrix is then utilized to derive the system’s behavior more accurately. The study investigates installing a 15&#xa0;m wide spar foundation with a 60-m wide floating dock in regular wave conditions. The analysis includes two critical scenarios: i.e., when the dock gates are closed and open, which in turn may cause instability. This paper analyzes the response amplitude operators (RAO) when the dock is not directly connected to the spar, making it crucial. The results show that the proposed floating dock can successfully support spar installation even while the gates are open. The studies reveal that viscous damping plays a vital role in determining the behavior of such dock systems as it contributes significantly to their stability.</p>

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Influence of floating dock and keel plates on the response of a spar

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Soumyashree Pani,
  • Nilanjan Saha,
  • Sundaravadivelu Ranganathan

摘要

Floating wind farm are a promising renewable energy source, but their maintenance and installation in offshore areas offer significant obstacles due to severe weather conditions. An innovative concept—a floating dock—has been offered as a viable option for installing spar-supported offshore wind turbines and their components in these farms. The floating dock is self-supporting and facilitates the maintenance of spar foundations and wind turbine components by sheltering them from unfavorable weather window. This paper studies the hydrodynamic response of such a system, focusing on the heave response of the floating dock using the finite element method with ANSYS-AQWA software. The numerical free decay experiments determine the damping matrix. The damping matrix is then utilized to derive the system’s behavior more accurately. The study investigates installing a 15 m wide spar foundation with a 60-m wide floating dock in regular wave conditions. The analysis includes two critical scenarios: i.e., when the dock gates are closed and open, which in turn may cause instability. This paper analyzes the response amplitude operators (RAO) when the dock is not directly connected to the spar, making it crucial. The results show that the proposed floating dock can successfully support spar installation even while the gates are open. The studies reveal that viscous damping plays a vital role in determining the behavior of such dock systems as it contributes significantly to their stability.