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Wetdeck slamming loads on a developed catamaran hullform – experimental investigation

Swidan, A; Thomas, G; Penesis, I; Ranmuthugala, D; Amin, W; Allen, T; Battley, M; (2016) Wetdeck slamming loads on a developed catamaran hullform – experimental investigation. Ships and Offshore Structures , 12 (5) pp. 653-661. 10.1080/17445302.2016.1194555. Green open access

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Abstract

Catamaran wetdeck slamming has been experimentally investigated using a servo hydraulic slam testing system. A series of controlled-speed water impacts was undertaken on a rigid catamaran bow section with two interchangeable centrebows. Entry into the body of water was at two fixed trim angles: 0° and 5°. The vertical velocity was varied from 3 to 5 m/s in 0.5 m/s increments. This study presents a new dataset of pressure distributions and slam forces on the arched wetdeck structure of catamaran vessels. The relationships between the peak force magnitudes, relative impact angle and vertical velocity are observed, with a small reduction in slam force for an amended centrebow. Limited pressure measurements along the archway were not found to be representative of wetdeck slamming loads.

Type: Article
Title: Wetdeck slamming loads on a developed catamaran hullform – experimental investigation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/17445302.2016.1194555
Publisher version: http://dx.doi.org/10.1080/17445302.2016.1194555
Language: English
Additional information: This is an Accepted Manuscript of an article published by Taylor & Francis in Ships and Offshore Structures on 16 June 2016, available online: http://www.tandfonline.com/10.1080/17445302.2016.1194555.
Keywords: Catamaran, water impact, wetdeck slam, hydrodynamic loads, slamming force, pressure distribution
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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/1505647
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