Development of the Response Amplitude Operators in floating offshore platforms at Aberdeen University on FindAPhD.com

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Dr M Aleyaasin, Dr M Manzari Applications accepted all year round Self-Funded PhD Students Only

About the Project

Dynamic stresses occurs in pipes, during pipeline installation as a result of vessel motion which is unavoidable. Moreover, such stresses occur in risers and equipment connected to floating offshore platforms.

The response amplitude operators (RAO) are tools by which the platform motion as a results ocean environment can be predicted. Inaccurate prediction of vessel or platform motion lead to underestimation of the dynamic stresses and may cause damage to equipment connected to the platform or pipes under installation.

Many software packages exist to predict the stresses during marine installation and operation. Accurate prediction of motion cannot be achieved by these software, unless appropriate RAO functions can be fed into the software. The project aims on finding RAOs that are more realistic and result accurate prediction of vessel motion.

In this research, first, diffraction type software by use of which the damping force, stiffness and added mass for the floating objects can be determined will be investigated. Thereafter, force type RAOs will be determined and tested with FEM software to check if it can simulate sea keeping during installation.

Moreover, models will be developed by which the displacement type RAO’s can be found from damping ratio and natural period of vessel or platform . When these newly developed RAOs are fed to the FEM software, subsea industries can find out why some unsuccessful installation in the past has occurred , that they could not predict it in simulation.

The successful candidate should have, or expect to have, an Honours Degree at 2.1 or above (or equivalent) in mechanical engineering

Essential Background: Ocean wave mechanics, computer programming.

Knowledge of: Familiar with system modelling via ODE,s and also a computer language (preferably MATLAB).

Funding Notes

This project is for self-funded students only. There is no funding attached to this project. The successful applicant will be expected to pay Tuition Fees and living expenses, from their own resources, for the duration of study.

References

APPLICATION PROCEDURE:

This project is advertised in relation to the research areas of the discipline of Engineering. Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for Degree of Doctor of Philosophy in Engineering, to ensure that your application is passed to the correct College for processing.

NOTE CLEARLY THE NAME OF THE SUPERVISOR AND EXACT PROJECT TITLE YOU WISH TO BE CONSIDERED FOR ON THE APPLICATION FORM. Applicants are limited to applying for a maximum of 2 projects. Any further applications received will be automatically withdrawn.

Informal inquiries can be made to Dr M Aleyaasin (m.aleyaasin@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Graduate School Admissions Unit (cpsgrad@abdn.ac.uk).

Where will I study?

Aberdeen University

The University of Aberdeen is the fifth oldest university in the UK and boasts over 500 years of research and teaching excellence.

Development of the Response Amplitude Operators in floating offshore platforms

Aberdeen University School of Engineering