权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Vortex-induced vibrations (VIV) assessment of subsea power cables and mooring lines of offshore renewable energy converters

海上可再生能源转换器的海底电力电缆和系泊线的涡激振动 (VIV) 评估

基本信息

批准号：
2434904
负责人：
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：
2020
资助国家：
英国
起止时间：
2020 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2434904
关键词：
Vortex induced vibrations VIV assessment

项目摘要

Offshore renewables provide a way to harness the huge amounts of energy resources available in unconventional locations. However, due to the nature of an offshore environment, there are other issues introduced that are not present with land instalments. One such issue is the damage and failure of suspended cables, whether for moorings or electricity transfer. The failures of these cables can be dangerous and expensive to replace. With the expansion of offshore projects across the world and the emergence of floating wind turbines the dependence on these cables is set to increase. My research aims to investigate the issue of vortex-induced vibrations on these cables and mooring lines.The main solutions that will be produced are: What are the nature and general features of VIV (cross-flow, in-line and axial responses) of a submerged flexible power cable and mooring lines under combined wave-current-turbulence scenarios? What are the maximum VIV amplitudes and amplified mean displacements under combined wave-current-turbulence environment? How does the ambient turbulence combined with wave-current interactions affect hydrodynamic forces and cable/mooring responses and how to evaluate fatigue loadings? What methods can be adapted in VIV suppression of power cables and mooring lines? The research will be carried out through a combination of numerical and theoretical methods. It may also involve the use of the Flo-Wave facilities to validate the numerical and theoretical methods used.

海上可再生能源提供了一种方法，可以利用非常规地区可用的大量能源。然而，由于近海环境的性质，还有其他问题不存在于土地分期付款中。其中一个问题是悬挂电缆的损坏和故障，无论是用于系泊还是电力传输。这些电缆的故障可能会很危险，而且更换成本也很高。随着世界各地海上项目的扩张和浮动风力涡轮机的出现，对这些电缆的依赖将会增加。本研究旨在研究这些缆索和系泊缆索的涡激振动问题，主要的解决方案是：在波浪-水流-湍流联合作用下，水下柔性电力缆索和系泊缆索的涡激振动的性质和一般特征是什么？在波-流-湍流联合环境下，VIV的最大振幅和放大的平均位移是多少？环境湍流和波流相互作用如何影响水动力和缆索/系泊响应，以及如何评估疲劳载荷？电力电缆和系缆绳的涡激振动抑制可以采用哪些方法？研究将通过数值和理论相结合的方法进行。它还可能涉及使用Flo-Wave设施来验证所使用的数值和理论方法。