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Slam characteristics of a high-speed wave piercing catamaran in irregular waves


French, Benjamin and Thomas, GA and Davis, MR, Slam characteristics of a high-speed wave piercing catamaran in irregular waves, Royal Institution of Naval Architects. Transactions. Part A. International Journal of Maritime Engineering, 156, (Part A1) pp. A25-A36. ISSN 1479-8751 (2014) [Refereed Article]

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Copyright 2014 The Royal Institution of Naval Architects

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DOI: doi:10.3940/rina.ijme.2014.a1.274


Slam characteristics of a 112m INCAT wave piercing catamaran in a range of realistic irregular sea conditions are presented in this paper. Towing tank testing of a 2.5 m hydroelastic segmented catamaran model was used to gather a database of slam events in irregular seas. The model was instrumented to measure motions, centrebow surface pressures and forces, encountered wave elevations and wave elevations within the bow area tunnel arches. From these measurements characteristics of the vessel slamming behaviour are examined: in particular relative vertical velocity, centrebow immersion, archway wave elevations and slam load distributions. A total of 2,098 slam events were identified over 22 different conditions, each containing about 80 to 100 slam events. The data, although inherently scattered, shows that encounter wave frequency and significant wave height are important parameters with regard to centrebow slamming. Relative vertical velocity was found to be a poor indicator of slam magnitude and slams were found to occur before the centrebow arch tunnel was completely filled, supporting the application of a two-dimensional filling height parameter as a slam indicator.

Item Details

Item Type:Refereed Article
Keywords:Slam, Hydroelastic segmented model, Irregular waves
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Naval architecture
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:French, Benjamin (Dr Benjamin French)
UTAS Author:Thomas, GA (Professor Giles Thomas)
UTAS Author:Davis, MR (Professor Michael Davis)
ID Code:88622
Year Published:2014
Web of Science® Times Cited:4
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-02-11
Last Modified:2017-11-03

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