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- W2186795819 abstract "Deepwater offloading buoys have a relatively small displacement when compared to other floating systems, with the majority of the displacement being used to support its mooring system and the oil offloading lines. This results in a floating system that has a very active response to the environment coupled with feedback from the mooring and flowline systems. Comparison of experimental data and coupled analysis results shows that viscous modeling of the buoy skirt by applying a Morison drag force formulation based on relative velocity can be used to better predict the pitch motion. As the operating water depth increases, prediction of full 6 degree-of-freedom (DOF) motions of the offloading buoy becomes more difficult since the mass/damping/stiffness contribution of mooring system and oil offloading lines becomes even more influential than that of the buoy. Thus, the coupling between mooring lines/oil offloading lines and the buoy hull becomes more complex. Both time- and frequency-domain approaches were applied to predict the vertical plane motions, i.e. surge, heave, and pitch, of the deepwater buoy. It is found that the pitch motion is sensitive to the drag effect of the skirt, and is coupled with both surge and heave motions, and that a time-domain fully coupled analysis can capture the viscous drag effect. Results from two experiments, one with a freely floating buoy and the other with a moored buoy, are presented to show that the proposed time-domain coupled analysis predicts the buoy motion behavior very well for both cases." @default.
- W2186795819 created "2016-06-24" @default.
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- W2186795819 date "2005-01-01" @default.
- W2186795819 modified "2023-09-27" @default.
- W2186795819 title "Coupled Analysis of Deepwater Oil Offloading Buoy And Experimental Verification" @default.
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