Introduction & Example Files

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Introduction & Example Files

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Introduction

Note

This example is simplified in PipeLay Starter Edition where there is no timetrace vessel motions, active line length, tip separation criterion or DNV local buckling checks. If you are using Starter Edition then you should ignore certain aspects of these articles, in particular parts of the ‘Results’ section.

 

Example 16 simulates a reel-lay scenario whereby a model including a lay vessel equipped with a reel-lay ramp simulates reel-lay using the active line length feature in PipeLay. A pipeline coated in corrosion protection runs from a Zero-gap support, through O-shaped roller boxes and down onto the seabed. Static and dynamic analyses are performed on the configuration to demonstrate how the active line length functionality, simulating reel-lay pay-out, can be used in both types of analyses. An initial static analysis and two subsequent restart analyses, one static and one dynamic, are included in the example. In the initial static analysis, a desirable static configuration is obtained based on an optimum value for the tip separation. The two subsequent analyses restart from this optimised configuration and carry out the reel-lay pay-out analysis. DNV local buckling checks are performed on the outputs from the example. The figure below below illustrates the static configuration.

Static Configuration

Static Configuration

 

Example Files

The input files for this example may be found in the directory ‘Example 16 – Reel-Lay’, which is located in the Examples subdirectory of your PipeLay installation directory. The input files are as follows:

Example 16 – Reel-Lay.ppd

PipeLay project file

Pay Out Velocity.ttr

Pipe Payout Velocity file

Lay Vessel Velocity.ttr        

Lay Vessel Velocity file

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