Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 147
... damping at high frequen- cies . Thus , the knowledge of hydrodynamic damping has a significant impact on the determination of the TLP tendon loads . Not much is known about the heave damping characteristics of a TLP . In this study ...
... damping at high frequen- cies . Thus , the knowledge of hydrodynamic damping has a significant impact on the determination of the TLP tendon loads . Not much is known about the heave damping characteristics of a TLP . In this study ...
Page 149
... damping factor was considerably small than the measured ones . Since the damping was found to be mostly linear , the difference between the measured damping and radiation damping can be attributed to the linear viscous damping . Since ...
... damping factor was considerably small than the measured ones . Since the damping was found to be mostly linear , the difference between the measured damping and radiation damping can be attributed to the linear viscous damping . Since ...
Page 168
... damping ratio , in terms of the logarithmic decrement , was then expressed as follows : v = 8 / √82 + 4π2 = sw + dwv = ( 14 ) Total low - frequency viscous damping was assumed to comprise still water damping and viscous wave drift damping ...
... damping ratio , in terms of the logarithmic decrement , was then expressed as follows : v = 8 / √82 + 4π2 = sw + dwv = ( 14 ) Total low - frequency viscous damping was assumed to comprise still water damping and viscous wave drift damping ...
Contents
A Study on the Stability Criteria of Semisubmersibles | 4 |
Sharan and Praveen Kalra | 6 |
CASE HISTORIES | 7 |
Copyright | |
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added mass amplitude analysis approximately average boundary condition boundary layer cable calculated circular cylinder components computed crest damping coefficient damping ratio density diffraction dimensionless displacement drag coefficient dynamic effects Ekofisk estimates experimental Figure first-order floating fluid force coefficients free surface frequency domain Green function heave horizontal hydrodynamic hydrodynamic forces incident wave inline force integral equation irregular lift force linear loads low frequency low-frequency surge maximum mean drift forces measured method mooring motion natural frequency nonlinear obtained Offshore Technology open boundary oscillation oscillatory flow parameters phase velocity platform predicted pressure random wave ratio regular waves Reynolds number Sarpkaya second order second-order wave shown simulation solitary waves solution spectral spectrum standard deviation surge response tank tanker tests transfer function transverse values velocity potential vertical vortex vortices wave damping wave drift damping wave elevation wave forces wave height wave-current