Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 11, Part 1American Society of Mechanical Engineers, 1992 - Arctic regions |
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Page 82
... ratio , the inertia coefficient is found to have reduced by about 40 % at the corresponding KC numbers as the aspect ratio H / D increases from 1 to 2 ( compare Figures 3 and 7 ) . When the aspect ratio H / D reduces from 1 to 0.5 the ...
... ratio , the inertia coefficient is found to have reduced by about 40 % at the corresponding KC numbers as the aspect ratio H / D increases from 1 to 2 ( compare Figures 3 and 7 ) . When the aspect ratio H / D reduces from 1 to 0.5 the ...
Page 225
... ratio is λ = 31 Qa Зл ( 17 ) = 2mw ( 11 ) and the relative damping ratio is : δ λ 11/00 = 2006 - 278 , ( 12 ) where the natural frequency wo is assumed equal to the undamped natural frequency . For a linear system the damping ratio is ...
... ratio is λ = 31 Qa Зл ( 17 ) = 2mw ( 11 ) and the relative damping ratio is : δ λ 11/00 = 2006 - 278 , ( 12 ) where the natural frequency wo is assumed equal to the undamped natural frequency . For a linear system the damping ratio is ...
Page 303
... ratio can also be expressed as modal damping ratio , n , as the percentage of the critical damping , which is used in association with viscous damping model . The relation between the logarithmic decrement & n and the damping ratio n is ...
... ratio can also be expressed as modal damping ratio , n , as the percentage of the critical damping , which is used in association with viscous damping model . The relation between the logarithmic decrement & n and the damping ratio n is ...
Contents
OCEAN WAVES AND CURRENT | 1 |
Directional Wave Observations During High Sea States From an NDBC Discus Buoy | 25 |
Vortex Trajectories Around a Circular Cylinder in Oscillatory Plus Mean Flows | 69 |
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added mass added resistance analysis body buoy cable calculated catenary components computed configuration convective cylinder damping ratio density displacement distribution domain drag coefficient drag force drift forces dynamic response effect energy Engineering estimated experimental extreme Figure floating flow fluid force coefficients free surface function Green's function heave motion horizontal hydrodynamic hydrodynamic damping incident wave inertia integral internal wave irregular waves KC number lift force linear load low-frequency damping matrix maximum measured method mode mooring Morison equation nondimensional nonlinear obtained Ocean Ocean Engineering Offshore Technology oscillation parameters peak phase velocity platform pontoon potential prediction Rayleigh Rayleigh distribution region resonant rotation second-order ship shown simulation solitary wave spectra spectrum submerged surge tension tethers values vector velocity velocity potential vertical vibration vortex water depth wave crest wave forces wave frequency wave height wave period Wavenumber wind