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

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Page 260

Space Control) [4] is used as HAC and each

but control spillover still exist even though ... DVFB (Direct Velocity Feedback

Control) [5] is used as LAC and damping of the all

Space Control) [4] is used as HAC and each

**mode**is controlled independentlybut control spillover still exist even though ... DVFB (Direct Velocity Feedback

Control) [5] is used as LAC and damping of the all

**modes**are augmented.Page 261

where subscript C shows controlled

Bc and NRx M matrix BR are given by dividing #T PL. Number of controlled

be ...

where subscript C shows controlled

**modes**and R residual**modes**. Nc x M matrixBc and NRx M matrix BR are given by dividing #T PL. Number of controlled

**modes**Nc must be equal to number of actuators M so that the each**modes**canbe ...

Page 411

The number of

factor which significantly affects the study results. The number of

for the modal superposition are generally selected based on the modal mass ...

The number of

**modes**required to include in the seismic analysis is a criticalfactor which significantly affects the study results. The number of

**modes**requiredfor the modal superposition are generally selected based on the modal mass ...

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### Contents

OCEAN WAVES AND ENERGY | 1 |

HYDRODYNAMIC FORCES | 45 |

COMPUTATIONAL HYDRODYNAMICS | 91 |

Copyright | |

7 other sections not shown

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### Common terms and phrases

added mass amplitude analysis boundary conditions buoy calculated Circular Cylinder compliant tower components correlation length curve deck diameter diffraction drag coefficient drag force drift force dynamic effects energy Engineering envelope equation experimental Figure fluid Fluid Mechanics free surface heave Hilbert transform horizontal hydrodynamic hydrodynamic force incident wave increase installation interaction irregular waves lift coefficient lift force linear load control lock-in matrix maxima maximum measured method model tests modes mooring line nonlinear obtained Ocean OMAE oscillating cylinder parameters peak phase pipe platform predicted present pressure problem quadratic Quickwave random ratio Reynolds number riser seastate second-order shear shedding frequency shown simulation solution spectral spectrum stationary cylinder stiffeners Strouhal Strouhal number transfer function transverse turbulence uniform flow values vector velocity potential vertical vibration vortex shedding water depth wave force wave frequency wave height wave power wind