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The impact of extreme wave events on a fixed multicolumn offshore platform

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Abdussamie, N ORCID: 0000-0002-8628-562X, Ojeda, R ORCID: 0000-0002-2421-0032, Drobyshevski, Y, Thomas, G and Amin, W 2017 , 'The impact of extreme wave events on a fixed multicolumn offshore platform' , International Journal of Offshore and Polar Engineering, vol. 27, no. 3 , pp. 293-300 , doi: 10.17736/ijope.2017.sh18.

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Abstract

This paper presents an experimental and numerical investigation into the magnitude and distribution of the hydrodynamic loads affecting a fixed multicolumn offshore platform (rigidly mounted tension leg platform) when subjected to extreme wave events. All wave load components, including wave-in-deck slamming pressures, were predicted using a commercial computational fluid dynamics (CFD) code STAR-CCM+ and compared against experimental measurements. Slamming pressures were calculated using both data obtained locally at discrete points and globally averaged over the whole exposed area of the deck. In all simulated cases, the deck area exposed to a wave-slamming event was found to be in contact with a water–air mixture with a significant proportion of air phase. It was concluded that the slamming pressure data for the exposed area provided better insights into the pressure changes due to air compressibility and its content.

Item Type: Article
Authors/Creators:Abdussamie, N and Ojeda, R and Drobyshevski, Y and Thomas, G and Amin, W
Keywords: extreme waves, wave-in-deck loads, dynamic response, offshore platforms, slamming pressure
Journal or Publication Title: International Journal of Offshore and Polar Engineering
Publisher: International Society of Offshore and Polar Engineers
ISSN: 1053-5381
DOI / ID Number: 10.17736/ijope.2017.sh18
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© by The International Society of Offshore and Polar Engineers

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