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 46
... spectrum . Variance density ( m2 / Hz ) 600 500 Test 3 variance density spectrum for probe R25 400 Hm0 measured = 14 9m 300 Hm0 DELFRAC = 14 6m 200 100 0 05 Undisturbed spectrum Measured diffracted spectrum DELFRAC diffracted spectrum 0 ...
... spectrum . Variance density ( m2 / Hz ) 600 500 Test 3 variance density spectrum for probe R25 400 Hm0 measured = 14 9m 300 Hm0 DELFRAC = 14 6m 200 100 0 05 Undisturbed spectrum Measured diffracted spectrum DELFRAC diffracted spectrum 0 ...
Page 100
... Spectrum ( m ^ 2 / s ) 10.0 Density Spectrum , Premating1 89 8.0 Exp Num 6.0 4.0 2.0 Std ( m ) 0.25 0.20 20 20 0.15 ☐ Exp Num 00 0.0 5 10 15 Period ( sec ) 0.10 0.05 0.00 Fig . 13. Density Spectrum of Mating1 Wave Density Spectrum ...
... Spectrum ( m ^ 2 / s ) 10.0 Density Spectrum , Premating1 89 8.0 Exp Num 6.0 4.0 2.0 Std ( m ) 0.25 0.20 20 20 0.15 ☐ Exp Num 00 0.0 5 10 15 Period ( sec ) 0.10 0.05 0.00 Fig . 13. Density Spectrum of Mating1 Wave Density Spectrum ...
Page 167
... spectrum as it lacks realistic information of the wave build - up and decay either side of the extreme wave crest event . It is therefore necessary to constrain the New Wave into a random wave generated from the same characteristic spectrum ...
... spectrum as it lacks realistic information of the wave build - up and decay either side of the extreme wave crest event . It is therefore necessary to constrain the New Wave into a random wave generated from the same characteristic spectrum ...
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Common terms and phrases
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