Supervisors:
Enquiries email: [email protected]
Project description
With the expansion of offshore wind comes the unavoidable question of what happens when we no longer need the foundations? So that we may minimise long term liability, and operate in a sustainable manner, a cradle to grave approach needs to be considered – one that reaches right back to the development of systems that allow for both maximum performance during the lifetime of the turbine, as well as its cost-effective removal at end of life.
At present removal is broadly categorized into three methods: overpressure (pressurising the void at the top of the monopile to produce an upwards traction), vibration and rotation (which both utilise movements of the pile to reduce the strength of surrounding soils into which it is embedded). While some exploratory work has been carried out by contractors to date, none of these techniques have yet to be studied in detail at the scale of a typical offshore monopile.
The aim of this PhD project is to develop computational models of these removal processes, to understand their effectiveness in different soil conditions, and to enable the development of prototype and full-scale take-up to be developed. In doing so, a cost-effective parametric analysis will be granted, and virtual prototyping prior to expensive demonstration and risk adverse deployment. The nature of this study though computational techniques will not only allow for extraction methods to be optimised, but also the geometry of piles for future designs to aid extraction whilst maintaining in-service requirements.
The novelty of this project is found in its aims to:
Training & Skills:
Depending on prior experience, you will receive specific technical training in computational methods (especially the MPM), continuum mechanics, geotechnics, Matlab and Julia languages. The Advanced Research Computing unit at Durham will also provide training in HPC, programming and version control.
You will benefit from a taught programme, giving you a broad understanding of the breadth and depth of current and emerging offshore wind sector needs. This begins with an intensive six-month programme at the University of Hull for the new student, drawing on the expertise and facilities of our academic partners. It is supplemented by Continuing Professional Development (CPD), which is embedded throughout your 4-year research scholarship.
Eligibility requirements
If you have received or expect to achieve before starting your PhD programme a First-class Honours degree, or a 2:1 Honours degree and a Masters, or a Distinction at Masters level a degree (or the international equivalents) in engineering, earth science, mathematics and statistics, physics, we would like to hear from you.
If your first language is not English, or you require a Student Visa to study, you will be required to provide evidence of your English language proficiency level that meets the requirements of our academic partners. This course requires academic IELTS 7.0 overall, with no less than 6.0 in each skill. Please contact [email protected] for further guidance or questions.
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