## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 39

4.4 Vave Spectrum It was found that the wave spectra measured in our test

4.4 Vave Spectrum It was found that the wave spectra measured in our test

**field**were alsost proportional to f - 5 at high frequency range as usual and can be expressed by PiersonMoskowitz type formulation as S ( f ) = A f - s exp ( -Bf- ...Page 109

2 + = 0 ( 6 ) 2 ax 2 ay Q is the potential , and the velocity in the x and y direction is found from : V Х аф ay and V у ( 7 ) ax In an irrotational flow

2 + = 0 ( 6 ) 2 ax 2 ay Q is the potential , and the velocity in the x and y direction is found from : V Х аф ay and V у ( 7 ) ax In an irrotational flow

**field**the Bernoulli equation is valid and reads : Fig . 4 Cylinder in a rotational ...Page 205

The far -

The far -

**field**asymptotic behaviour of the potentials are discussed and the redia tion conditions for the second - order diffraction potentials are explicitly given . The formulation of radiation conditions for the second - order ...### What people are saying - Write a review

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### Contents

OCEAN WAVES | 1 |

VOLUME OFFSHORE TECHNOLOGY PART | 12 |

Simulation of Hurricane Seas in a Multidirectional Wave Basin | 17 |

Copyright | |

25 other sections not shown

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### Common terms and phrases

acting added amplitude analysis applied array average boundary calculated circular coefficients compared comparison component computed considered crest cylinder damping defined depends depth determined direction distribution drag drift dynamic effect elevation Engineering equation estimated experimental experiments expressed factor field Figure flow fluid force coefficients frequency function given horizontal hydrodynamic incident increase inertia integral irregular KC number length lift force linear load mass maximum mean measured method moored motion nonlinear obtained Ocean Offshore oscillation parameters peak period pile plate potential predicted present pressure problem random range ratio regular waves relative respectively response roughness ship shown shows simulation solution spectra spectrum speed structures surface surge Table technique term theory velocity vertical vortex wave force wave height wind