## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2; Volume 8, Part 2American Society of Mechanical Engineers, 1989 - Arctic regions |

### From inside the book

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Page 255

In these plots the

plotted non - dimensionalised by ND . Figures 7 and 8 indicate that for 5 < U / ND

< 7.5 , the traces of the transverse force repeat themselves every two cycles ,

rather ...

In these plots the

**relative**velocity between the cylinder and the flow , URY isplotted non - dimensionalised by ND . Figures 7 and 8 indicate that for 5 < U / ND

< 7.5 , the traces of the transverse force repeat themselves every two cycles ,

rather ...

Page 477

Fo = p Cg g D a2 ( 9 ) where where is the current speed plus the slowly varying

component of

Thus the damping depends on the rms

Fo = p Cg g D a2 ( 9 ) where where is the current speed plus the slowly varying

component of

**relative**velocity . ( 10 ) 1 ( KD ) * for KD < 1.26 6 = 1 for KD > 1.26Thus the damping depends on the rms

**relative**velocity and this can dominate ...Page 515

Four components of the mean drifting force are obtained , in which , the

wave term is dominant , whereas the Bernoulli quadratic component is secondary

. The negative dirfting force is observed at some frequency for the ship which is ...

Four components of the mean drifting force are obtained , in which , the

**relative**wave term is dominant , whereas the Bernoulli quadratic component is secondary

. The negative dirfting force is observed at some frequency for the ship which is ...

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### Contents

HYDRODYNAMIC FORCES | 1 |

WaveCurrent Force on Horizontal Cylinder | 7 |

DoubleFactor Method for the Linearization of Drag Force | 39 |

Copyright | |

45 other sections not shown

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### Common terms and phrases

added mass amplitude analysis applied approach approximately assumed body boundary calculated circular compared components computed considered correlation corresponding cylinder damping defined depends depth described determined direction distribution drag coefficient drift force effect elements Engineering equation estimate experimental experiments expressed extreme factor failure Figure flow fluid free surface frequency function given horizontal hydrodynamic important in-line included increase indicate integral length lift lift force linear load maximum mean measured Mechanics method mode motion nonlinear normal obtained Offshore oscillation parameters period pipeline potential predicted present pressure probability problem random range ratio reference relative reliability represented respectively response second order separation shear ship shown shows simulation solution structure surface Table term tests theory transverse uncertainty variables varying velocity vertical vortex wave force wave height