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Wind Turbine Operation and Maintenance in Extreme Conditions – How will Springing and Ringing Loads Have an Influence on O&M?

  • Full or part time
  • Application Deadline
    Applications accepted all year round
  • Competition Funded PhD Project (European/UK Students Only)
    Competition Funded PhD Project (European/UK Students Only)

Project Description


The mix of energy supply worldwide has changed dramatically in the last few decades. In the UK, in order to tackle climate change and increasing energy consumption, there has been a clear movement from fossil towards renewable and sustainable energy sources. Wind energy, for example, has generated 98% of Scottish electricity demand in October 2018, which has established a world-class record.

Compared with onshore wind turbines, offshore wind could provide a relatively larger capacity and a lower level of noise pollution, etc. As the wind industry moving to deeper water depth, fixed type wind turbines are no longer suitable, floating wind turbines must be applied. A TLP-type floating wind turbine often utilizes vertical tendons as mooring lines to prevent the platform from drifting away, having the advantage of a smaller heave response compared with other types of FOWTs. However, higher-order loads, such as the springing and ringing loads will have a negative impact on the TLP-type FOWT.

This project will first investigate the simulation of higher-order loads effects based on advanced CFD and potential flow methods. The pros and cons of simulating the higher-order loads will be compared and discussed. Based on the simulated load effects, motion responses in extreme conditions will be solved by a holistic coupled mechanical-electrical model of the wind turbine system, which is significant for operation and maintenance. Finally, the influence of ringing and springing loads on O&M under different scenarios will be quantified, providing guidance on FOWT design and analysis.

Eligibility Criteria

Applicants should have a strong academic background in mechanical engineering, civil engineering, electrical engineering, ocean engineering, naval architecture, mathematics or a related subject at a Master’s level, or first class BEng/BSc Honours degree, or equivalent. Applicants must be available to commence academic studies in the UK by October 2019. For further information please contact Dr Xiaolei Liu ().

How to apply

Applicants should send their application directly to Dr Xiaolei Liu; e-mail:
Applications should include:
- Cover Letter
- CV
- Degree transcripts and certificates and, if English is not your first language, a copy of your English language qualifications.

Funding Notes

Funding for: UK / EU

Funding amount: The funding covers UK / EU student tuition fees and stipend (~£15009 per year) in line with University rates.

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