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

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Page 229

sudden

force amplitude, hence the comparison with a mechanical oscillator. Limits For

Lock-in: Uniform Flow Stansby (1976) a : Re = 3,600 ** Flo : Re = 9,200 Peltzer et

. al.

sudden

**phase**shift was also shown to be associated with a significant jump inforce amplitude, hence the comparison with a mechanical oscillator. Limits For

Lock-in: Uniform Flow Stansby (1976) a : Re = 3,600 ** Flo : Re = 9,200 Peltzer et

. al.

Page 327

From the above formulations, it can be shown that the instantaneous frequency (

denotes differentiation with respect to time. An “optimum carrier” frequency is

given ...

From the above formulations, it can be shown that the instantaneous frequency (

**phase**velocity) is given by [13]: d4(t) r(t)f(t) = r(t)f(t) dt &*(t) where the prime “”denotes differentiation with respect to time. An “optimum carrier” frequency is

given ...

Page 328

In general it was found that this frequency differed from one computed based on

a constant

measured

In general it was found that this frequency differed from one computed based on

a constant

**phase**assumption, i.e., p(t) = wet + v (also a least-square fit to themeasured

**phase**). The results from analysis of one half-cycle for AC = 19.3 are ...### What people are saying - Write a review

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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