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Estimation of torsional and global loads for a wave-piercing high-speed catamaran at full-scale in irregular bow quartering seas using CFD simulation

Citation

Almallah, I and Ali-Lavroff, J and Holloway, DS and Davis, MR, Estimation of torsional and global loads for a wave-piercing high-speed catamaran at full-scale in irregular bow quartering seas using CFD simulation, Ocean Engineering, 266, (Part 4) Article 113006. ISSN 0029-8018 (2022) [Refereed Article]

Copyright Statement

2022 Elsevier Ltd.

DOI: doi:10.1016/j.oceaneng.2022.113006

Abstract

Catamarans experience more types of global load than monohulls, these include pitch connecting moment, transverse bending moment, and split force. High-speed catamarans are widely used for passenger transportation but as the speed and size increase the severity of loads rises due to slam induced effects. In this study, full-scale CFD simulations are undertaken to investigate the loads acting on a 98m Incat wave-piercer catamaran (Hull 061) HSV2 Swift. Simulations are performed for conditions of a selected sea trial run in bow quartering seas at 20 knots forward speed undertaken by the Naval Surface Warfare Center, Carderock Division (NSWCCD), enabling comparisons and validation. In order to estimate internal global loads at different sections of the vessel, rigid body dynamics is applied based on the hydrodynamic and inertia forces. Those internal loads include longitudinal bending moment (LBM), pitch connecting moment (PCM), torsional moment (TorM), transverse bending moment (TBM), split force and prying moment. The estimated and measured global loads are also compared with design loads limits provided by DNV GL rules, and peak values of pitch and roll accelerations corresponding to each slam load are determined at the same wave height and wave period as the sea trial. The application of CFD to simulate sea trials runs in oblique seas is shown to provide a reliable estimation of slam induced loads for application in early design stages.

Item Details

Item Type:Refereed Article
Keywords:computational fluid dynamics (CDF), sea trials, wave-piercing catamaran, full-scale, torsional loads, global dynamic wave loads
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Mechanical engineering not elsewhere classified
Objective Division:Transport
Objective Group:Water transport
Objective Field:International passenger water transport (e.g. passenger ships)
UTAS Author:Almallah, I (Mr Islam Almallah)
UTAS Author:Ali-Lavroff, J (Dr Jason Ali-Lavroff)
UTAS Author:Holloway, DS (Associate Professor Damien Holloway)
UTAS Author:Davis, MR (Professor Michael Davis)
ID Code:154252
Year Published:2022
Funding Support:Australian Research Council (LP170100555)
Deposited By:Engineering
Deposited On:2022-11-16
Last Modified:2023-01-10
Downloads:0

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