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 300 200- 100 0 05 Hm0 DELFRAC = 14 6m Undisturbed spectrum Measured diffracted spectrum DELFRAC diffracted spectrum ...
... spectrum . Variance density ( m2 / Hz ) 600 500 Test 3 variance density spectrum for probe R25 400 Hm0 measured = 14 9m 300 200- 100 0 05 Hm0 DELFRAC = 14 6m Undisturbed spectrum Measured diffracted spectrum DELFRAC diffracted spectrum ...
Page 100
... Spectrum ( m ^ 2 / s ) 10.0 Density Spectrum , Premating1 8.0 Exp Num 6.0 4.0 2.0 0.0 0 5 10 15 20 20 Period ( sec ) Fig . 13. Density Spectrum of Mating1 Wave Fig . 12. Tower Seakeeping , Squall Environment 0.05 0.00 Surge Std Heave ...
... Spectrum ( m ^ 2 / s ) 10.0 Density Spectrum , Premating1 8.0 Exp Num 6.0 4.0 2.0 0.0 0 5 10 15 20 20 Period ( sec ) Fig . 13. Density Spectrum of Mating1 Wave Fig . 12. Tower Seakeeping , Squall Environment 0.05 0.00 Surge Std Heave ...
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
2DOF amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient computed Conference on Offshore configuration contour line convergence Copyright curve damping deck density diameter displacement distribution drag coefficient dynamic effects equation excitation experimental extrapolation Figure flow fluid force FPSO free surface frequency domain Guide Load heave hot spot stress hull hydrodynamic installation jacket kips lift coefficient linear load transfer located longitudinal maximum measured Mechanics and Arctic mesh refinement method mode model test moon pool mooring lines mooring system motion noise nonlinear obtained Offshore Mechanics operation parameters peak Petrobras pipe platform polyester polyester rope Predicted pressure random waves ratio response Reynolds number riser roll S-N curve seastates shear soil spectral spudcan steel stiffness structure Table tension transverse upstream cylinder velocity velocity potential vertical vessel vibration vortex water depth wave height Weibull distribution weld