## 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 65

CALCULATION SCHEME FOR WAVE FORCE Figure 2 illustrates the case where

the body surface intersects to the free surface at an angle of r . Then , Ac and Az

in Figure 2 are defined as

CALCULATION SCHEME FOR WAVE FORCE Figure 2 illustrates the case where

the body surface intersects to the free surface at an angle of r . Then , Ac and Az

in Figure 2 are defined as

**follows**: The wave force in the j direction , F ; , can be ...Page 67

B.C ) = " I Ï m'AB „ Cm + ( -5 ) AmBan Carrying out the differentiation with respect

to z direction in q , equation ( 31 ) is reduced as

- nm - ni - ( m + n ) Cm + n } ) . ( 51 ) 1 . ( € 0 = 1 , E1121 Fy ( 981 ) = _ 2022 20 ...

B.C ) = " I Ï m'AB „ Cm + ( -5 ) AmBan Carrying out the differentiation with respect

to z direction in q , equation ( 31 ) is reduced as

**follows**: m = 1 n = 1 { siyem - nm- nm - ni - ( m + n ) Cm + n } ) . ( 51 ) 1 . ( € 0 = 1 , E1121 Fy ( 981 ) = _ 2022 20 ...

Page 250

... sway and yaw motions of the tanker are taken into account . The coupled

motion equations of the tankerbuoy system can be written as

Fig . 12 ) ( M® + M.M. ) + K * ( 1 – t ) * ( t ) de + k_x , = P + Firs ( 14 ) Σ ( 10 ) -6 ( M.

265.

... sway and yaw motions of the tanker are taken into account . The coupled

motion equations of the tankerbuoy system can be written as

**follows**: ( See alsoFig . 12 ) ( M® + M.M. ) + K * ( 1 – t ) * ( t ) de + k_x , = P + Firs ( 14 ) Σ ( 10 ) -6 ( M.

265.

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### Contents

CONTENTS | 131 |

High Frequency Hydrodynamic Damping of a TLP | 147 |

A Comparison of Results | 153 |

Copyright | |

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### Common terms and phrases

acceleration added amplitude analysis angle applied approach approximately assumed body boundary cable calculated coefficients compared components computed considered constant coordinate corresponding cylinder damping depth determined developed diffraction direction displacement distribution domain drag drift dynamic effect element Engineering equation estimated experimental experiments expressed field Figure floating flow fluid force free surface frequency function given height hydrodynamic included increase integral length lift force linear load mass maximum mean measured Mechanics method mode mooring motion natural nonlinear obtained Offshore operation oscillation period phase pile platform position potential predicted present pressure problem production range ratio relative represents respectively response second-order separation ship shown shows simulation solution stiffness structure surface surge Table Technology tension tests theory values velocity vertical vessel wave