## 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 159

SPECTRAL ESTIMATION OF SECOND ORDER WAVE FORCES ON A TLP SUBJECT TO NONGAUSSIAN IRREGULAR SEAS S. B. Kim , E. J. ... Theoretical studies of the so called mean wave

SPECTRAL ESTIMATION OF SECOND ORDER WAVE FORCES ON A TLP SUBJECT TO NONGAUSSIAN IRREGULAR SEAS S. B. Kim , E. J. ... Theoretical studies of the so called mean wave

**drift force**and low frequency wave**drift force**have been performed quite ...Page 298

... forces incident on the crane ship were approximated as the sum : & + in - [ Agexp ( -1kg ( xocosøsty , sinys ) +1 ( wyt + € ; ) ] ( 26 ) j = 1 Then the slowly varying

... forces incident on the crane ship were approximated as the sum : & + in - [ Agexp ( -1kg ( xocosøsty , sinys ) +1 ( wyt + € ; ) ] ( 26 ) j = 1 Then the slowly varying

**drift force**is proportional to local envelope - amplitude squared ...Page 139

For the mean

For the mean

**drift forces**, the error is less than 2 % . The fluctuating component of the drag force expressed in terms of the variance deviates from the time domain results by less than 20 % , and the corresponding standard deviation ...### What people are saying - Write a review

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### Contents

HYDRODYNAMIC FORCES | 47 |

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

K S Varyani | 79 |

Copyright | |

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### Common terms and phrases

acting added mass amplitude analysis angle applied array assumed body boundary calculated circular coefficient compared component considered constant corresponding crest cylinder damping defined dependent depth determined direction distribution domain drag drift dynamic effect element 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 ship shown shown in Figure simulation solution spectra spectrum structure surface surge Table theory velocity vertical vessel wave force wave height wind