## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 5American Society of Mechanical Engineers, 1991 - Arctic regions |

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Page 12

The vertical positions of the nodes are

horizontal positions remain the same . Then the horizontal component of the

particle velocity u can be

equation ...

The vertical positions of the nodes are

**calculated**at each time step , while theirhorizontal positions remain the same . Then the horizontal component of the

particle velocity u can be

**calculated**for each node by means of the secondequation ...

Page 13

When the surface elevation at the current time step is larger than the surface

elevation at the previous time step , node NT is excluded in the

/ 01 ) , and in the average of ( 2018n ) . It is determined that the

...

When the surface elevation at the current time step is larger than the surface

elevation at the previous time step , node NT is excluded in the

**calculation**of ( 00/ 01 ) , and in the average of ( 2018n ) . It is determined that the

**calculated**phase...

Page 31

c ) The sediment transport in the corner can be

6 m / s . The model is valid for pipelines on erodible seabeds within a certain

range of pipe lowering : - the pipe is initially embedded so much that onset of ...

c ) The sediment transport in the corner can be

**calculated**to be 9 . c . = 1 . 6 . 10 -6 m / s . The model is valid for pipelines on erodible seabeds within a certain

range of pipe lowering : - the pipe is initially embedded so much that onset of ...

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### Contents

Design of the Troll Multiphase Transport System | 1 |

Propagation and Diffraction of Cnoidal Waves | 9 |

Dynamic Stresses and Motions of Offshore Pipelines During Laying | 17 |

Copyright | |

25 other sections not shown

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analysis applied axial base bending boundary calculated carbon cause coating combined composition considered cooling corrosion crack curve cycle damage defects depth determined developed dew point diameter direction distribution dynamic effect element equation equipment experiments factor failure fatigue field Figure flaws flow force fracture frequency function girth welds given grade hardness heat higher increase installation internal length limit load lower material maximum measured mechanical method monitor obtained offshore operation parameters pass pipe pipeline plate point temperature position possible predicted present pressure problem procedure production propagation properties range reduced relative Research shown shows simulation span specified Specimen steel strength stress surface Table Technology temperature tensile tension toughness tube wall thickness wave weld metal welded joint yield