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Design, modelling, and analysis of a large floating dock for spar floating wind turbine installation

机译：垫浮式风力涡轮机安装大型浮船坞的设计，建模和分析

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摘要

Installation of floating wind turbines at the offshore site is a challenging task. A significant part of the time efficiency and costs are related to the installation methods which are sensitive to weather conditions. This study investigates a large floating dock concept, which can be used to shield a floating wind turbine during installation of tower, nacelle, and rotor onto a spar foundation. In this paper, the concept is described in detail, and a design optimisation is carried out using simple design constraints. Hydrodynamic analysis and dynamic response analysis of the coupled system of the optimum dock and spar are conducted. Two spars of different sizes are considered, and the motion responses of the spars with and without the dock in irregular waves are compared. Through analysis of the motion spectra and response statistics, dynamic characteristics of the coupled system is revealed. The present design of the dock reduces the platform-pitch responses of the spars and potentially facilitates blade mating, but may deteriorate the heave velocity of the spars in swell conditions. Finally, future design aspects of the floating dock are discussed.
机译：在近海站点的浮动风力涡轮机的安装是一个具有挑战性的任务。时间效率和成本的重要部分与对天气条件敏感的安装方法有关。本研究调查了大型浮动码头概念，可用于在塔架，机舱和转子安装到翼梁基础上屏蔽浮动风力涡轮机。在本文中，详细描述了该概念，并使用简单的设计约束来执行设计优化。进行了最佳码头和翼梁耦合系统的流体动力学分析和动态响应分析。考虑了两种不同尺寸的翼梁，并比较了与不规则波在不规则波中的翼梁的运动响应。通过分析运动光谱和响应统计，揭示了耦合系统的动态特性。底座的本设计减少了翼梁的平台间距响应，并且可能便于刀片交配，但可能会使膨胀条件中翼梁的升降速度劣化。最后，讨论了未来的浮船坞的设计方面。

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