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An investigation into parametric roll resonance in regular waves using a partly non-linear numerical model

Record type: Article

A partly non-linear time-domain numerical model is used for the prediction of parametric roll resonance in regular waves. The ship is assumed to be a system with four degrees of freedom, namely, sway, heave, roll and pitch. The non-linear incident wave and hydrostatic restoring forces/moments are evaluated considering the instantaneous wetted surface whereas the hydrodynamic forces and moments, including diffraction, are expressed in terms of convolution integrals based on the mean wetted surface. The model also accounts for non-potential roll damping expressed in an equivalent linearised form. Finally, the coupled equations of motion are solved in the time-domain referenced to a body fixed axis system.

This method is applied to a range of hull forms, a post-Panamax C11 class containership, a transom stern Trawler and the ITTC-A1 containership, all travelling in regular waves. Obtained results are validated by comparison with numerical/experimental data available in the literature. A thorough investigation into the influence of the inclusion of sway motion is conducted. In addition, for the ITTC-A1 containership, an investigation is carried out into the influence of tuning the numerical model by modifying the numerical roll added inertia to match that obtained from roll decay curves

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Citation

Ahmed, T.M., Hudson, D.A. and Temarel, P. (2010) An investigation into parametric roll resonance in regular waves using a partly non-linear numerical model Ocean Engineering, 37, (14-15), pp. 1307-1320. (doi:10.1016/j.oceaneng.2010.06.009).

More information

Published date: October 2010
Keywords: parametric roll resonance, non-linear, regular waves, time-domain, transom stern trawler, modern containerships
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 166979
URI: http://eprints.soton.ac.uk/id/eprint/166979
ISSN: 0029-8018
PURE UUID: ba7ae130-b829-4943-8b83-f53c78b9eb99
ORCID for D.A. Hudson: ORCID iD orcid.org/0000-0002-2012-6255
ORCID for P. Temarel: ORCID iD orcid.org/0000-0003-2921-1242

Catalogue record

Date deposited: 05 Nov 2010 10:10
Last modified: 18 Jul 2017 12:24

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Contributors

Author: T.M. Ahmed
Author: D.A. Hudson ORCID iD
Author: P. Temarel ORCID iD

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