| EPSRC Reference: |
GR/L69879/01 |
| Title: |
VIOLENT WATER SURFACE BEHAVIOUR AROUND LARGE VERTICAL CYLINDERS IN LARGE WAVES |
| Principal Investigator: |
Chaplin, Professor JR |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Unknown |
| Organisation: |
City, University of London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1998 |
Ends: |
30 September 1999 |
Value (£): |
62,625
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| EPSRC Research Topic Classifications: |
| Coastal & Waterway Engineering |
Oil & Gas Extraction |
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Summary on Grant Application Form |
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The violent motion of the water surface-piercing cylinder at the crest of a large wave is a contributory factor in the offshore oil industry's recent experiences of the ringing of platforms and green water deck impacts. The subject is particularly topical because of the new tanker-based floating production systems (FPSOs) being built for the North Sea, which feature a potentially vulnerable cylindrical turret in the bow. The hydrodynamics are complex and highly non-linear; reliable data from laboratory experiments are required to validate numerical models. It is proposed to expose a model cylinder to extreme waves produced by frequency focussing: measurements will be made of the pressure distribution around the cyclinder, and the water surface elevation over an area surrounding the cylinder. The equivalent measurements will be made for a cylinder driven with predetermined dynamics through still water, allowing the surface interaction to be determined independantly of the extreme wave kinematics. The work proposed will assemble for the first time a large body of high-quality data, checked against industry-standard code provided by the project's industrial partner. The likely benefits will be improvements to the design used by the research and industrial communities concerned with the safe and confident development of offshore resources in increasingly deep water and hostile conditions.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.city.ac.uk |