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 301
... excitation can result when the incident wave frequency is at integral multiples of the natural frequency of the cylin- der concerned ( ie excitation occurs at the natural frequency which is below that of the forcing frequency ) ...
... excitation can result when the incident wave frequency is at integral multiples of the natural frequency of the cylin- der concerned ( ie excitation occurs at the natural frequency which is below that of the forcing frequency ) ...
Page 303
... excitation to be made . These parameters were identified as : ( i ) A mass ratio : effectively equal to ( 1+ 1 / Ca ) m / m ( ii ) The ratio of drag to inertia force ( iii ) Structural stiffness ( insofar as it determines fo for a given ...
... excitation to be made . These parameters were identified as : ( i ) A mass ratio : effectively equal to ( 1+ 1 / Ca ) m / m ( ii ) The ratio of drag to inertia force ( iii ) Structural stiffness ( insofar as it determines fo for a given ...
Page 304
... excitation of the structure can result for such a mechanism . In the case of SSW forcing , since the waves in such wavetrains can be approximated ( at least locally ) to Airy waves , this latter form of excitation may be expected to be ...
... excitation of the structure can result for such a mechanism . In the case of SSW forcing , since the waves in such wavetrains can be approximated ( at least locally ) to Airy waves , this latter form of excitation may be expected to be ...
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