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Wave slam on wave piercing catamarans in random head seas

Thomas, GA; Davis, MR; French, BJ; (2017) Wave slam on wave piercing catamarans in random head seas. Ocean Engineering pp. 84-97. 10.1016/j.oceaneng.2017.03.007. Green open access

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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.

Type: Article
Title: Wave slam on wave piercing catamarans in random head seas
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.oceaneng.2017.03.007
Publisher version: http://dx.doi.org/10.1016/j.oceaneng.2017.03.007
Language: English
Additional information: © 2017 Elsevier Ltd. All rights reserved. This manuscript version is made available under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International license (CC BY-NC-ND 4.0). This license allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licenses are available at https://creativecommons.org/licenses/. Access may be initially restricted by the publisher.
Keywords: Fast ferry; Catamaran; Random seas; Wave slamming
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1544299
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