## 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 154

The MDO completely describes the relationship between the input wave

elevation and the mean

of the QTF which defines the slowly varying component of the second order wave

force.

The MDO completely describes the relationship between the input wave

elevation and the mean

**drift force**, and is frequently used to approximate that partof the QTF which defines the slowly varying component of the second order wave

force.

Page 168

We did not simulate

were unable to find two filters needed to produce time series that are Hilbert

transforms of each other . Dynamic response of the platforms in waves was

determined ...

We did not simulate

**drift force**and drift damping by this method , because wewere unable to find two filters needed to produce time series that are Hilbert

transforms of each other . Dynamic response of the platforms in waves was

determined ...

Page 168

The wave system described by equation ( 2 ) exerts a second - order wave (

difference - frequency wave

The wave system described by equation ( 2 ) exerts a second - order wave (

**drift**)**force**on the platform that can be ... wk ) is the ( quadratic ) transfer function for thedifference - frequency wave

**drift force**due to the presence of two simultaneous ...### What people are saying - Write a review

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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