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Intact and damaged survivability of an offshore floating-moored OWC device


Elhanafi, A and Macfarlane, G and Fleming, A and Leong, Z, Intact and damaged survivability of an offshore floating-moored OWC device, Proceedings of the 27th (2017) annual International Offshore and Polar Engineering Conference, 25-30 June, 2017, San Francisco, USA, pp. 58-65. ISSN 1098-6189 (2017) [Refereed Conference Paper]

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Copyright 2017 International Society of Offshore and Polar Engineers

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This paper outlines physical model experiments of a small (1:50) scale floating–moored OWC investigating the influences of mooring line failure at different instants when subjected to unidirectional regular waves. Additionally, a 3D Computational Fluid Dynamics (CFD) model is developed and validated in good agreement against the experiments. This combined CFD and experimental approach is then used to investigate the transient effects and the impact of using a mooring system with redundancy when damage occurs to mooring lines during an extreme wave condition. In the test conditions presented, it was found that the transient overshooting increases the maximum mooring line tension by 23 % and 19 % as a result of losing 50 % and 100 % (full–loss) of mooring lines at one of the forward legs respectively.

Item Details

Item Type:Refereed Conference Paper
Keywords:offshore floating moored OWC, experiments, survivability, mooring line failure, CFD
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ocean engineering
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Wave energy
UTAS Author:Elhanafi, A (Dr Ahmed Elhanafi)
UTAS Author:Macfarlane, G (Associate Professor Gregor MacFarlane)
UTAS Author:Fleming, A (Dr Alan Fleming)
UTAS Author:Leong, Z (Dr Zhi Leong)
ID Code:118576
Year Published:2017
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2017-07-13
Last Modified:2018-04-19

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