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Prediction of slamming loads on catamaran wetdeck using CFD


Swidan, A and Thomas, G and Ranmuthugala, D and Penesis, I and Amin, W and Allen, T and Battley, M, Prediction of slamming loads on catamaran wetdeck using CFD, Proceedings of the 13th International Conference on Fast Sea Transportation (FAST 2015), 1-4 September 2015, Washington DC, USA, pp. 1-6. (2016) [Refereed Conference Paper]

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Wetdeck slamming is one of the principal hydrodynamic loads acting on catamarans. CFD techniques are shown to successfully characterise wetdeck slamming loads, as validated through a series of controlled-speed drop tests on a three-dimensional catamaran hullform model. Simulation of water entry at constant speed by applying a fixed grid method was found to be more computationally efficient than applying an overset grid. However, the overset grid method for implementing the exact transient velocity profile resulted in better prediction of slam force magnitude. In addition the splitting force concurrent with wetdeck slam event was quantified to be 21% of the vertical slamming force.

Item Details

Item Type:Refereed Conference Paper
Keywords:catamaran, slam force, pressure, water impact, drop test, CFD
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Swidan, A (Dr Ahmed Swidan)
UTAS Author:Ranmuthugala, D (Professor Dev Ranmuthugala)
UTAS Author:Penesis, I (Professor Irene Penesis)
UTAS Author:Amin, W (Dr Walid Amin)
ID Code:105294
Year Published:2016
Deposited By:Seafaring and Maritime Operations
Deposited On:2015-12-17
Last Modified:2021-10-01
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