OrcaFlex Examples - Z Miscellaneous

Z01 Line on Line Impact.zip (12.1 MB) – Description PDF (360 KB)

OrcaFlex allows you to prevent lines passing through each other in the dynamic analysis. When the option is selected on both lines it generates a resistive force when one line contacts the other. This routine also takes account of line outer diameters when assessing contact.

Z02 Line on Line Slide.zip (1.1 MB) – Description PDF (193 KB)

The line clashing routine can be used to model one line sliding over another. However remember that friction is not included for line on line contact and that line on line contact will only occur in dynamics. A fun example of this is given below.

A boy scout slides down an aerial ropeway by holding onto the ends of a short rope wrapped over it. He then flies off the end to hit the ground.

Disclaimer: No real boy scouts were injured in the making of this example.

Z03 Vortex Tracking.zip (9.7 MB) – Description PDF (147 KB)

Two lines are placed horizontally, perpendicular to a slab current. The lower line is held fixed at both ends, while the upper line has one end spring mounted and the other fixed. The OrcaFlex Vortex Tracking model is applied to both lines, as a demonstration of how VIV can be assessed in OrcaFlex using this tool.