Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts 1-2American Society of Mechanical Engineers, 2004 - Arctic regions |
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Page 231
... ratios are equal , then this ratio will be unity ( hence a line is drawn at unity ) . Figure 6 indicates that , like the tandem cylinder tests of Allen and Henning [ 8 ] with fresh water inside the cylinder , this ratio decreases with ...
... ratios are equal , then this ratio will be unity ( hence a line is drawn at unity ) . Figure 6 indicates that , like the tandem cylinder tests of Allen and Henning [ 8 ] with fresh water inside the cylinder , this ratio decreases with ...
Page 313
exist at many frequency ratios , but period doubling bifurcation never took place . At = 0.36312 , sub harmonics of order 3 was found to occur . As the frequency ratio was decreased to 0.36302 , sudden occurrence of chaos took place ...
exist at many frequency ratios , but period doubling bifurcation never took place . At = 0.36312 , sub harmonics of order 3 was found to occur . As the frequency ratio was decreased to 0.36302 , sudden occurrence of chaos took place ...
Page 437
... ratio for the cylinder without fairings is below 0.05 , based on similar tests . Record Period ( s ) Damping Ratio 1 1.13 0.14 2 1.06 0.18 3 1.16 0.10 Average 1.12 0.14 0 F ( x , t ) XS Xe m L Fig . 10. Damping Ratios One additional ...
... ratio for the cylinder without fairings is below 0.05 , based on similar tests . Record Period ( s ) Damping Ratio 1 1.13 0.14 2 1.06 0.18 3 1.16 0.10 Average 1.12 0.14 0 F ( x , t ) XS Xe m L Fig . 10. Damping Ratios One additional ...
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amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient comparison computed Conference on Offshore configuration Copyright damping deck diameter diffraction displacement draft drag drag coefficient dynamic effect equations Figure finite element flow fluid force FPSO frequency domain heave hot spot stress hull hydrodynamic installation interaction jacket kips linear load load transfer located longitudinal maximum measured Mechanics and Arctic method mode model test Model-I mooring lines mooring system motion nonlinear numerical obtained Offshore Mechanics offshore structures parameters peak performed Petrobras pipe platform polyester predicted pressure ratio Rayleigh distribution response Reynolds number riser Riser Tensioning S-N curve seastates shear shown in Fig simulation soil spectral spectrum spudcan steel stiffness subsea Table transverse upstream cylinder values velocity velocity potential vertical vessel vibration vortex vortex induced vibrations water depth wave height Weibull distribution Y Force