## Proceedings of the ... International Conference on Offshore Mechanics and Arctic EngineeringAmerican Society of Mechanical Engineers, 1994 - Arctic regions |

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Page 91

HYDRODYNAMIC EFFECT OF HEAVE MOTION ON SLOW DRIFT

OSCILLATION CONSIDERING FINITE AMPLITUDE MOTIONS OF A FLOATING

Corporation Tokyo, ...

HYDRODYNAMIC EFFECT OF HEAVE MOTION ON SLOW DRIFT

OSCILLATION CONSIDERING FINITE AMPLITUDE MOTIONS OF A FLOATING

**BODY**Yoshihiro Tanaka Department of Civil Engineering Design TaiseiCorporation Tokyo, ...

Page 93

Simulation Algorithm for

degrees of freedom; i.e. the swaying, heaving and rolling modes; thus the

equation of motion can be expressed as = f; ; i = 1,3 (13) XMX, +K,X } j=l where

Mij is mass ...

Simulation Algorithm for

**Body**Motion We assume that**body**motion has threedegrees of freedom; i.e. the swaying, heaving and rolling modes; thus the

equation of motion can be expressed as = f; ; i = 1,3 (13) XMX, +K,X } j=l where

Mij is mass ...

Page 94

(20) and applying the second-step BEM, i.e. the integral equation given by Eq.(6),

we can obtain the time derivative of the velocity potential opt'(t+At) on the

surface. Substituting again pt'(t+At) into Eq.(18), d2Xi'/dt2 can be calculated.

(20) and applying the second-step BEM, i.e. the integral equation given by Eq.(6),

we can obtain the time derivative of the velocity potential opt'(t+At) on the

**body**surface. Substituting again pt'(t+At) into Eq.(18), d2Xi'/dt2 can be calculated.

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### Contents

OCEAN WAVES AND ENERGY | 1 |

Load Control Method and Its Realization on an OWC Wave Power Converter | 19 |

Nonlinearity in CrestTrough Statistics of Bretschneider Seas | 27 |

Copyright | |

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### Common terms and phrases

amplitude analysis applied approach assumed body boundary buoy calculated Circular coefficient compared compliant component considered correlation curve cylinder damping derived determined developed direction distribution domain drag drift dynamic effects energy Engineering equation experiments expressed field Figure flow fluid frequency function given height horizontal hydrodynamic increase installation interaction Journal length lift coefficient lift force linear load mass maximum mean measured method modes mooring motion nonlinear noted obtained Offshore operation oscillation peak period phase pipe platform potential predicted present pressure problem production random range ratio reference relative represent respectively response Reynolds number second-order shedding shown shows simulation solution spectrum structure surface Table Technology tests theory tower turbulence uniform values velocity vertical vibration vortex water depth wave wind