## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2; Volume 8, Part 2American Society of Mechanical Engineers, 1989 - Arctic regions |

### From inside the book

Results 1-3 of 64

Page 306

5 : Effect of

/ R , for Symbols , See Fig . 6 . 89dB 380HZ 98.706

112dB y / R 3.16 385HZ 112dB 73dB 635Hz 71 5HZ 99.7dB 99.7dB 0.3 YR - 1 ...

5 : Effect of

**Shear**on the Mean Velocity ( U ) in the Near and Far Wakes Versus Y/ R , for Symbols , See Fig . 6 . 89dB 380HZ 98.706

**shear**4.6 D 1.180 0.4 310Hz112dB y / R 3.16 385HZ 112dB 73dB 635Hz 71 5HZ 99.7dB 99.7dB 0.3 YR - 1 ...

Page 307

to support the effects of

note that the second peak at twice the dominant shedding frequency diminishes

to a large extent even for the case without upstream

to support the effects of

**shear**near the cylinder ( x / D = 1.18 ) . It is interesting tonote that the second peak at twice the dominant shedding frequency diminishes

to a large extent even for the case without upstream

**shear**. This may be due to ...Page 308

Figure 9 shows the effect of

signal at x / D = 1.18 and 4.6 while Figures 10 and 11 give the corresponding

spectra at these two locations . The results in these figures generally confirm the

...

Figure 9 shows the effect of

**shear**on the profile of the normalized rms of the v -signal at x / D = 1.18 and 4.6 while Figures 10 and 11 give the corresponding

spectra at these two locations . The results in these figures generally confirm the

...

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### Contents

HYDRODYNAMIC FORCES | 1 |

WaveCurrent Force on Horizontal Cylinder | 7 |

DoubleFactor Method for the Linearization of Drag Force | 39 |

Copyright | |

45 other sections not shown

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### Common terms and phrases

added mass amplitude analysis applied approach approximately assumed body boundary calculated circular compared components computed considered correlation corresponding cylinder damping defined depends depth described determined direction distribution drag coefficient drift force effect elements Engineering equation estimate experimental experiments expressed extreme factor failure Figure flow fluid free surface frequency function given horizontal hydrodynamic important in-line included increase indicate integral length lift lift force linear load maximum mean measured Mechanics method mode motion nonlinear normal obtained Offshore oscillation parameters period pipeline potential predicted present pressure probability problem random range ratio reference relative reliability represented respectively response second order separation shear ship shown shows simulation solution structure surface Table term tests theory transverse uncertainty variables varying velocity vertical vortex wave force wave height