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 203
... vibration of the cable span may occur , and these motions may cause the cable to abrade at the support point . Work up to this point addressing the problem of cable abrasion caused by vortex- induced vibrations has assumed uniform flow ...
... vibration of the cable span may occur , and these motions may cause the cable to abrade at the support point . Work up to this point addressing the problem of cable abrasion caused by vortex- induced vibrations has assumed uniform flow ...
Page 204
... vibration response of the cable . It is defined as ; V , V fnD where V is the average current speed . From figure 2 one can see that the maximum cross - flow amplitudes occur in the range of reduced velocities between 4 and 8. In this ...
... vibration response of the cable . It is defined as ; V , V fnD where V is the average current speed . From figure 2 one can see that the maximum cross - flow amplitudes occur in the range of reduced velocities between 4 and 8. In this ...
Page 500
... vibration tests . Μν 3. PREDICTIONS OF LOCK - IN VIBRATIONS 3.1 Iwan's model for lock - in vibrations The Wu ( 1989 ) experiments covered cases in which a spring supported cylinder vibrated in pure translations , i.e. the modal shape ...
... vibration tests . Μν 3. PREDICTIONS OF LOCK - IN VIBRATIONS 3.1 Iwan's model for lock - in vibrations The Wu ( 1989 ) experiments covered cases in which a spring supported cylinder vibrated in pure translations , i.e. the modal shape ...
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