## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 555

Evaluation of curves is performed through

surfaces includes wire frame and shaded image visualizations , sectioning

through appropriate algebraic surfaces such as planes and cylinders , isophotes ,

reflection ...

Evaluation of curves is performed through

**curvature**maps . Evaluation ofsurfaces includes wire frame and shaded image visualizations , sectioning

through appropriate algebraic surfaces such as planes and cylinders , isophotes ,

reflection ...

Page 557

normal vector n is given by 1r , rund Dr. k = ( 7 ) Ir . P laľ 1r.12 For a planar

parametric curve , k and n are given by XwYuu - yuxur ( -y.x2 ) k = ( 8 ) ( ** +

y3312 ( ?

**Curvature**Plots For a space parametric curve r ( u ) , the**curvature**k and the unitnormal vector n is given by 1r , rund Dr. k = ( 7 ) Ir . P laľ 1r.12 For a planar

parametric curve , k and n are given by XwYuu - yuxur ( -y.x2 ) k = ( 8 ) ( ** +

y3312 ( ?

Page 559

every point points along a principal

at a given point are those directions for which the normal

minimum ...

**Curvature**Lines A line of**curvature**is a curve on a surface whose tangent atevery point points along a principal

**curvature**direction . The principal directionsat a given point are those directions for which the normal

**curvature**takes onminimum ...

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### Contents

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

HYDRODYNAMIC FORCES | 47 |

The Force Coefficients on Inclined Cylinder in Random Wave and Current | 57 |

Copyright | |

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### Common terms and phrases

acting added mass amplitude analysis applied array assumed body boundary calculated circular coefficient compared comparison component considered constant corresponding crest cylinder damping defined dependent depth determined direction distribution domain drag drift dynamic effect element elevation Engineering equation estimated experimental experiments expressed Figure flow fluid forward speed frequency function given heave horizontal hydrodynamic increase integral irregular length lift force linear load maximum mean measured method mooring motion nonlinear obtained Offshore oscillation parameters period phase pile plate potential predicted present pressure problem radiation range ratio reference regular waves relative respectively response riser second-order ship shown shown in Fig simulation solution spectra spectrum structure surface surge Table theory velocity vertical vessel wave force wave height wind