Characterisation of hydrodynamic loads on floating Wind Turbine Generator substructures

用于海上风力发电机（WTG）的Stiesdal TetraSub平台是一种半潜式浮动概念，由三对压舱任务组成，围绕中心柱呈三角形放置。浮动基础是由紧系缆绳系泊，可以适用于一定范围的水深。目前，作为前端工程设计（FEED）过程和载荷评估的一部分，浮式平台的极端波浪载荷预测采用线性波浪理论和Morison方程相结合的方法，然后应用计算流体动力学（CFD）和有限元分析（FEA）。这种方法导致创建多个系统模型，这可能是一种低效和无效的方法。此外，类似的方法也适用于浮式结构上波浪上升的预测；这通常是通过模型规模的储罐测试结合CFD结果来估计的。与预测极端负载一样，这些方法也存在许多缺点，导致系统过度设计，从而影响系统的运行、生存能力和成本

The Stiesdal TetraSub platform for offshore wind turbine generators (WTG), is a semi-submersible floating concept comprising of three pairs of ballast tasks triangularly positioned around a central column. The floating foundation is moored by taut mooring lines that can be suitable for a range of water depths.Currently, as part of the front-end engineering design (FEED) process and load assessment, extreme wave loading on floating platforms is predicted using a combination of linear wave theory and the Morison equation, followed by the application of computational fluid dynamics (CFD) and finite element analysis (FEA). This approach leads to the creation of multiple system models which can be an inefficient and ineffective approach.Furthermore, similar methods are applied when predicting wave run-up on floating structures; this is typically estimated using model scale tank testing combined with CFD results. As with predicting extreme loads, these methods have a number of shortcomings, leading to over-engineered systems, which effect the operation, survivability, and cost of the system