Sijtsma, Jorrit, Mr (2020) Stability assessment of a floating hybrid wind-wave platform: a frequency signal analysis. Integration Project, Industrial Engineering and Management.
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Abstract
In recent years, there has been an increasing amount of research dedicated to the transition of offshore wind-energy production towards deep water deployment, usually by means of floating platforms. The stability of a floating wind-turbine system is of primary concern. Therefore, this research project has assessed the stability of a floating hybrid wind-wave platform design, which has been conceptualised by Ocean Grazer. By means of the open source Boundary Element Method (BEM) program NEMOH, the static and dynamic response of the structure to regular waves with unitary amplitude have been obtained. It has been shown that the structure is statically stable. Moreover, the dynamic response has been obtained, including resonance frequencies for the motions heave and pitch. In terms of dynamic stability, a fitted transfer function to the pitch frequency data has indicated stability through the location of the poles. Finally, the procedure has been repeated for the structure with a rounded bow shape, in order to compare the surge response to the first case. However, the surge response is similar and therefore the result is indecisive. Further research has been suggested on the round bow shape, the inclusion of the wind effect and mooring and a time-domain analysis.
| Item Type: | Thesis (Integration Project) |
|---|---|
| Supervisor name: | Vakis, A. and Kousemaker, T.M. |
| Degree programme: | Industrial Engineering and Management |
| Thesis type: | Integration Project |
| Language: | English |
| Date Deposited: | 23 Jun 2020 13:03 |
| Last Modified: | 23 Jun 2020 13:03 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/22110 |
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