Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 167
... Drift Force The irregular , long - crested wave train was assumed propagating in the x - direction . We approximated the incident wave system by the Pierson - Moskowitz spectrum ( e.g. Germanischer Lloyd , 1990 ) and simulated the ...
... Drift Force The irregular , long - crested wave train was assumed propagating in the x - direction . We approximated the incident wave system by the Pierson - Moskowitz spectrum ( e.g. Germanischer Lloyd , 1990 ) and simulated the ...
Page 168
... drift damping . In terms of damping ratios , = sw + wv , where subscripts SW and WV refer to the still water and the viscous wave drift parts . Corre- sponding damping coefficients sw and dwy were determined by multiplying the damping ...
... drift damping . In terms of damping ratios , = sw + wv , where subscripts SW and WV refer to the still water and the viscous wave drift parts . Corre- sponding damping coefficients sw and dwy were determined by multiplying the damping ...
Page 171
... drift damping . ) Calculated standard deviations of low - frequency surge in differ- ent seastates , obtained with the more efficient frequency domain analysis , show that including wave drift damping resulted in sig- nificantly lower ...
... drift damping . ) Calculated standard deviations of low - frequency surge in differ- ent seastates , obtained with the more efficient frequency domain analysis , show that including wave drift damping resulted in sig- nificantly lower ...
Contents
VORTEX SHEDDING AND VIBRATION | 187 |
OCEAN WAVES AND CURRENT | 209 |
COMPUTATIONAL METHODS | 247 |
Copyright | |
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added mass amplitude analysis approximately average body boundary condition cable calculated circular cylinder components computed correlation density diffraction displacement distribution drag coefficient dynamic effects Ekofisk Engineering experimental field Figure finite element floating flow fluid free surface frequency domain function Green function horizontal hydrodynamic hydrodynamic forces incident wave integral equation irregular waves length lift force linear load low-frequency matrix maximum measured method mode mode shapes mooring motion natural frequency nonlinear obtained Ocean Offshore Structures OMAE open boundary oscillation parameters phase velocity platform predicted present pressure problem random waves ratio response Reynolds number riser Sarpkaya seabed second-order ship simulation small forward solitary wave solution spectral spectrum stiffness surge tank tanker tension tether theory transverse values vector velocity potential vertical vessel vibration vortex vortices water depth wave drift damping wave forces wave height wave profile