Dann Ruiz, Nicolas, N. (2020) Ocean Grazer: An analytical approach to design an umbilical cord & floater buoy system. Integration Project, Industrial Engineering and Management.
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Abstract
The depletion of natural resources and unceasing pollution of the planet have led to an urgent demand for alternative energy sources. The Ocean Grazer concept aims at contributing in covering such a gap. It consists of a floating offshore platform, that combines wave energy converters and wind turbines, and stores energy on-site. For operational purposes, a floater-umbilical system is required for both the prototype and full-scale platforms. Environmental loading from wind, waves, and currents, greatly determines the structural integrity of such a system. This study aims to determine an optimal outer sheath umbilical to withstand environmental loading, and design a floater buoy with the required buoyancy. In this paper, an analytical approach is considered. Firstly, the static response of the prototype umbilical subject to environmental loading is studied. Environmental forces are obtained in a strictly analytical manner, and an optimisation problem is set up. It is found that the Factor of Safety (FOS), surge displacement and cable pretension are directly correlated. The study concluded the advantages of PVC as an outer sheath material. Secondly, the outer sheath armouring for the full-scale umbilical was designed. NEMOH, in combination with Matlab, was implemented to obtain the wave excitation force. Environmental loading was then modelled on Solidworks Simulation and Solidworks Flow Simulation.
| Item Type: | Thesis (Integration Project) |
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| Supervisor name: | Vakis, A. and Kousemaker, T.M. |
| Degree programme: | Industrial Engineering and Management |
| Thesis type: | Integration Project |
| Language: | English |
| Date Deposited: | 24 Jun 2020 11:21 |
| Last Modified: | 24 Jun 2020 11:21 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/22145 |
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