Results |
 
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Results |
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The following figures contain a selection of results from the dynamic analysis. The first two figures respectively show time traces of the effective tension at the vessel connection and pipeline end manifold (PLEM) for Production Riser 2. The graphs of tension in the riser show a periodic variance as the vessel is subject to regular wave loading. The isolation effects of the mid-water arch on the riser system can be seen in the reduced tension at the PLEM.
Riser 2 Effective Tension at Vessel
Riser 2 Effective Tension at PLEM
Effective Tension in Midwater Arch Tethers
The first figure below shows the tension in the mid-water arch tethers which again varies periodically due to wave loading. The free floating motion of the arch causes differences between the tether responses.
The final two figures show the heave, surge and sway motions of the mid-water arch. The arch motions while supporting the risers, allows vessel movement under wave loading to be minimised, reducing the loading effects on the risers in the touchdown zone and protecting the risers’ bend radii.
Arch Heave Motion
Arch Surge & Sway Motion