This paper investigates the hydrodynamical aspects of a fixed FPSO in regular waves. The emphasis is geared to the validation of state of the art CFD techniques, using particle image velocimetry measurements on the water velocities around a captive model of an FPSO in regular waves. The main focus is on the following issues: Determination of the water velocities around the vessel using PIV techniques and pressures on a girth below and just above the mean waterline of the vessel using pressure gauges. Comparison of the detailed RANS simulations of the flow around the bilges of the FPSO. The resulting pressure profiles along the girth, especially near the waterline, showed a significant non-linear effect in steep beam wave conditions. The velocities as measured near the bilges of the vessel indicated a strong separation at the bilges of the vessel. This leads to an overestimation of the water velocities near the bilges of the vessel as calculated using a linear diffraction programme. The resulting pressure profiles along the girth, especially near the waterline, showed a significant non-linear effect in steep beam wave conditions. The velocities as measured near the bilges of the vessel indicated a strong separation at the bilges of the vessel. This leads to an overestimation of the water velocities near the bilges of the vessel as calculated using a linear diffraction programme. RANS simulations will give a more realistic flow profile around the bilges.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4197-9
PROCEEDINGS PAPER
The Flow Around FPSO’s in Steep Regular Beam Waves: Results of PIV Experiments and RANS Computations Available to Purchase
Rene´ H. M. Huijsmans,
Rene´ H. M. Huijsmans
Maritime Research Institute (MARIN), Wageningen, The Netherlands
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Mike Graham,
Mike Graham
Imperial College London, London, UK
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Tim Kendon
Tim Kendon
Imperial College London, London, UK
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Rene´ H. M. Huijsmans
Maritime Research Institute (MARIN), Wageningen, The Netherlands
Mike Graham
Imperial College London, London, UK
Tim Kendon
Imperial College London, London, UK
Paper No:
OMAE2005-67426, pp. 965-972; 8 pages
Published Online:
November 11, 2008
Citation
Huijsmans, RHM, Graham, M, & Kendon, T. "The Flow Around FPSO’s in Steep Regular Beam Waves: Results of PIV Experiments and RANS Computations." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 3. Halkidiki, Greece. June 12–17, 2005. pp. 965-972. ASME. https://doi.org/10.1115/OMAE2005-67426
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