Numerical Prototype of the EDF Blyth Floating Wind Farm

EDF Blyth 浮动风电场的数值原型

• 批准号: 2588543
• 金额: --
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2588543
• 关键词: Numerical; Prototype; EDF; Blyth; Floating

This project aims to develop an in-house numerical prototype that will include hydro-aero-elastic loads analysis coupled with both wave and current loads, taking into account second-order nonlinear effects. This model will use dynamic analysis for estimating the stability and fatigue of a floating offshore wind project utilising a semi-submersible foundation and a 15 MW turbine. The overall structure analysis will be carried out for real site-specific sea states provided by the hind cast database ANEMOC3. Second order wave effects will be included as they can be crucial, as already proved in literature using Quadratic Transfer Functions.The development of this tool, from hereafter named 'Numerical Prototype', will use complete directional spectra and calculate loads and DoF responses of the turbine for every 3-hour sea state over its 25-year lifetime. This computationally costly method, summing up to 73000 simulations of sea states, aims to study the inaccuracies that are inherent to the method of bins that is most used in industry. As already discussed in literature, the method of bins has fatigue calculation uncertainties concerning the point of representation of bins, the excluded sea states from the overall calculation and the bin size. In addition, the Numerical Method avoids further assumptions on spectra directionality, where only one or two main directions are considered, and on wind shear and turbulence calculations, where assumptions are made due to lack of information of surface roughness length and surface friction velocity.

该项目旨在开发一个内部数值原型，该原型将包括波浪和电流载荷耦合的水-气-弹性载荷分析，并考虑二阶非线性效应。该模型将使用动态分析来估计利用半潜式基础和15兆瓦涡轮机的浮式海上风电项目的稳定性和疲劳。整体结构分析将对由后置数据库ANEMOC3提供的实际站点特定海况进行。二阶波效应将包括在内，因为它们可能是至关重要的，正如文献中使用二次传递函数已经证明的那样。该工具的开发，以下称为“数值原型”，将使用完整的方向谱，并计算涡轮机在其25年寿命期间每3小时海况的载荷和DoF响应。这种计算成本很高的方法，总结了73000个海况模拟，旨在研究工业中最常用的箱法固有的不准确性。正如文献中已经讨论的那样，箱的方法在箱的表示点、从总体计算中排除的海况和箱的尺寸方面具有疲劳计算的不确定性。此外，数值方法避免了对光谱方向性的进一步假设，因为只考虑了一个或两个主要方向，也避免了对风切变和湍流计算的进一步假设，因为缺乏表面粗糙度长度和表面摩擦速度的信息。