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

journal contribution
posted on 2023-05-17, 21:51 authored by French, Benjamin, Giles Thomas, Michael DavisMichael Davis
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.

History

Publication title

Royal Institution of Naval Architects. Transactions. Part A. International Journal of Maritime Engineering

Volume

156

Issue

Part A1

Pagination

A25-A36

ISSN

1479-8751

Department/School

Australian Maritime College

Publisher

Royal Institution of Naval Architects

Place of publication

United Kingdom

Rights statement

Copyright 2014 The Royal Institution of Naval Architects

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in engineering

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