Rogue wave impact on a semi-submersible offshore platform

Full three-dimensional simulation of the impact of a rogue wave on a semi-submersible platform is undertaken using the Smoothed Particle Hydrodynamics (SPH) technique. Two different mooring configurations are considered: A Tension Leg Platform (TLP) system and a Taut Spread Mooring (TSM) system. It...

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Bibliographic Details
Published in:Volume 5: Materials Technology; CFD and VIV
Main Authors: Rudman, Murray, Cleary, Paul, Leontini, Justin, Sinnott, Matthew, Prakash, Mahesh
Other Authors: Swinburne University of Technology
Format: Conference Object
Language:unknown
Published: American Society of Mechanical Engineers 2008
Subjects:
Arctic
Online Access:http://hdl.handle.net/1959.3/384967
https://doi.org/10.1115/OMAE2008-57705
Description
Summary:Full three-dimensional simulation of the impact of a rogue wave on a semi-submersible platform is undertaken using the Smoothed Particle Hydrodynamics (SPH) technique. Two different mooring configurations are considered: A Tension Leg Platform (TLP) system and a Taut Spread Mooring (TSM) system. It is seen that for a wave impact normal to the platform side, the heave and surge responses of the platform are significantly different for the two mooring systems. The TLP system undergoes large surge but comparatively smaller heave motions than the TSM system. The degree of pitch is very similar. The total tension in the mooring cables is approximately four times higher in the TSM system and exceeds the strength of the cables used in the simulation. SPH is seen to be an attractive alternative to standard methods for simulating the coupled interaction of highly non-linear breaking waves and structural motion.

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