Current Loading |
 
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Current Loading |
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Three currents are used in the various analyses. A ‘1-Year Storm’ current profile is used where the riser is connected and operating normally. A ‘10-Year Hurricane’ current profile is used for the disconnected case. A third current is used in the drift-off analysis.
All currents are defined as piecewise-linear using the data given in the table below. Note that each current point is defined by distance below MWL rather than elevation above the seabed.
Current Profiles
1-Year Storm |
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10-Year Hurricane |
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Depth (ft) |
Current (ft/s) |
|
Depth (ft) |
Current (ft/s) |
0 |
1.0 |
|
0 |
2.093 |
250 |
1.0 |
|
180 |
2.093 |
300 |
0.5 |
|
200 |
0.304 |
7500 |
0.5 |
|
7500 |
0.304 |
|
Drift-Off |
|
|
|
Depth (ft) |
Current (ft/s) |
Direction (o) |
|
0 |
2.0 |
130.0 |
|
250 |
2.0 |
130.0 |
|
300 |
1.0 |
130.0 |
|
7500 |
1.0 |
130.0 |