Optimisation of Deep Water Offshore Wind Systems

不断增长的能源需求与清洁能源生产之间的冲突是我们今天面临的挑战之一。该博士研究项目旨在解决海上可再生能源（ORE）的优化和弹性挑战。ORE被认为是一项很好的投资，但由于在更深的沃茨设计海上风力涡轮机（OWT）以及在未经调查的海底地基上设计基础存在不确定性，目前建设新的ORE基础设施的计划被搁置。浮式海上风力涡轮机（FOWT）是解决深水中日益增加的成本和基础问题的一种解决方案。它们还具有更大的能量潜力，更多的安装空间，并且它们通常比陆上风力涡轮机具有更少的限制，例如视觉限制和噪音影响。拟议的研究旨在为FOWT开发一种综合设计方法，以产生更有弹性和鲁棒的设计。详细的环境负荷评估与先进的耦合计算模型相结合，将提供一个复杂的气-水-弹性耦合响应的理解，使未来的方案优化。此外，内波的影响将进行调查，以预测对FOWT的稳定性的影响。因此，本项目的目的首先是通过评估平台上的负载，如系泊，风，表面和内波的影响，使用先进的耦合计算模型，为深水离岸风力系统开发更有弹性和鲁棒性的设计。其次，将优化单个FOWT和阵列，通过使用适当的CFD软件来模拟FOWT并开发MATLAB代码来优化FOWT的功率输出，以加速大规模FOW农场的安装。第三个目标是找到一个真实的世界解决方案，通过将波浪能转换器（WEC）连接到FOWT的浮动平台上来创建更有效的ORE。最初的步骤将涉及调查FOWT上的载荷，特别是内波，并找到合适的CFD软件来分析研究合作伙伴提供的实验室结果数据。

The conflict between increasing energy demand and clean energy generation is one of the challenges we face today. This PhD research project aims to address the challenge of optimisation and resilience for Offshore Renewable Energy (ORE). ORE is recognised as a good investment, but current plans for building new ORE infrastructure is held back due to the uncertainties involved with designing offshore wind turbines (OWT) in deeper waters and with foundations in un-investigated subsea ground. Floating offshore wind turbines (FOWTs) are a solution to the increasing costs and foundation issues within deeper water. They also have a greater energy potential, more installation space available and they generally have less restrictions than onshore wind turbines, such as visual constraints and noise impacts.The proposed research aims to develop an integrated design methodology for FOWTs that yields more resilient and robust designs. The detailed environmental load assessment combined with advanced coupled computational modelling will provide an understanding of the complex aero-hydro-elastic coupled response enabling the optimisation of future schemes. Furthermore, the effects of internal waves will be investigated to predict the impact on the stability of the FOWTs.The aims of this project therefore are firstly to develop more resilient and robust designs for deep water offshore wind systems by assessing the loads on the platforms, such as the impacts of moorings, wind, surface and internal waves, using advanced coupled computational modelling. Secondly, individual FOWTs and arrays will be optimised to accelerate the installation of large-scale FOW farms by using appropriate CFD software to simulate FOWTs and developing a MATLAB code to optimise the power output of FOWTs. And the third aims is to find a real world solution to create significantly more efficient OREs by attaching wave energy converters (WECs) to the floating platforms of FOWTs.The initial steps will involve the investigation of the loads on FOWTs, especially the internal waves, and finding an appropriate CFD software to analyse data from laboratory results provided by research partners.