... current field contribution johan wicher coefficient initial position simulation otc 12086 moored tanker sway model test computation resistance coefficient viscous reaction force low-frequency viscous reaction force head current surge direction coupling term equation Copyright...

... damping coefficient related to transverse and rotational motions as observed in the model tests was determined and compared to the pure surge direction. The differences in magnitude between the viscous damp- ing in still water and in current in pure surge direction for both model scale and full scale have...

... low frequency transfer function model test forward speed computation natural frequency coefficient regular wave tanker surge motion wave drift force surge direction frequency quadratic transfer function wave-current interaction effect moored tanker equation OTe 5631 Wave...

... the frequency range is twice the wave frequency range. Of the second order motions only the low frequency part will be considered and will be denoted as ~(2). Following the expansion of the motions and substi- tution into Newton's law we obtain for the surge direction: ( 4) (3) F 2) .(1» = -b 2) + .(1) + V xl...