海岸灾害及防护教育部重点实验室(河海大学)
系列特邀学术报告会
Reporting time：Wednesday, April 12, 2023, 10:00-12:00 a.m
Reporting place：Lecture Hall 702 Yankai Building
Reporting topic：Modelling dynamic response of FOWTs under extreme seas and its mitigation
Reporter：Professor Qian Ling, Manchester Metropolitan University, UK
Brief introduction of reporter：
Dr Ling Qian is Professor of Computational Fluid Dynamics in the Department of Computing and Mathematics at Manchester Metropolitan University and Director of Centre for Mathematical Modelling and Flow Analysis. He received a PhD degree in Aerospace Engineering from University of Glasgow in 2001. His research interests are in CFD modelling of fluid structure interaction with applications in offshore, ocean and aerospace engineering. He has over 120 publications in refereed journals and conference proceedings, is a reviewer for over 20 academic journals and a member of the Technical Programme Committee of the International Society of Offshore and Polar Engineers (ISOPE) and Peer Review College of the EPSRC, UK. He was PI on 5 EPSRC grants and Co-I on a Supergen Marine grant on extreme loading on wave energy converters and the CCP-WSI project. He currently leads a large multi-institute project on extreme loading on and survivability of floating offshore wind turbines (FOWTs) under complex environmental conditions, is PI on a Supergen ORE Hub project on passive control of FOWTs and Co-I on CCP-WSI+ and CCP-HEC projects– all funded by the EPSRC, UK.
Introduction to the report：
The offshore wind industry has experienced significant growth in recent years and continues to expand both in the UK and worldwide. Nearly all of the offshore wind turbines installed to date are located in relatively shallow water mounted on fixed bottom support structures. However, fixed bottom support structures are not feasible in deeper water, so it is necessary to explore floating offshore wind turbine (FOWT) systems.
There are a number of offshore wind turbine floating platform concepts in various stages of development. Of the basic concepts is the semi-submersible platform, which has recently received significant attention for its relatively shallow draft that improves site flexibility and installation cost effectiveness. However, FOWTs using semi-submersible support substructures may suffer unacceptably large heave, pitch and roll motions due to the resonant response of the structure and the action of extreme waves, which may increase the system downtime, adversely affect the turbine performance and cause damage to the system components including moorings and anchors.
In this talk, our recent EPSRC and Supergen ORE Hub funded work on the development of high fidelity CFD tools for modelling dynamic response of FOWTs under extreme marine environment and its mitigation using a novel tuned liquid multi-column damper will be summarised, along with a plan for the next step.