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Wave slam on wave piercing catamarans in random head seas

Citation

Davis, MR and French, BJ and Thomas, GA, Wave slam on wave piercing catamarans in random head seas, Ocean Engineering, 135 pp. 84-97. ISSN 0029-8018 (2017) [Refereed Article]

Copyright Statement

2017 Elsevier Ltd.

DOI: doi:10.1016/j.oceaneng.2017.03.007

Abstract

A hydro-elastic 2.5 m wave piercing catamaran model with a short centre bow has been tested in random head seas. Slamming wave impacts were found to be close to the aft end of the short centre bow. These occurred at time intervals of over 3 encountered modal wave periods, with longer intervals in smaller seas and for shorter modal periods. Slams were only detected in wave heights exceeding 1.5 m at full scale. Slam loads in 4 m seas were mostly about 25% of the hull weight but some reached 132% of the hull weight. Slam durations were generally about 0.35 s at full scale. Slam induced bending was found to reach 11% of the product of hull weight and length. Simulation of slamming within a time domain seakeeping computation showed slightly higher median relative velocities at the slam instant than was observed in the model tests.

Item Details

Item Type:Refereed Article
Keywords:fast ferry, catamaran, random seas, wave slamming
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ship and Platform Hydrodynamics
Objective Division:Manufacturing
Objective Group:Transport Equipment
Objective Field:Nautical Equipment (excl. Yachts)
Author:Davis, MR (Professor Michael Davis)
Author:French, BJ (Mr Ben French)
Author:Thomas, GA (Professor Giles Thomas)
ID Code:120212
Year Published:2017
Deposited By:Engineering
Deposited On:2017-08-16
Last Modified:2017-09-29
Downloads:0

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