The influence of forward speed and non-linearities on the dynamic behaviour of a container ship in regular waves
The influence of forward speed and non-linearities on the dynamic behaviour of a container ship in regular waves
The aim of this paper is to compare the heave and pitch motions for the S175 containership, travelling in head regular waves, obtained from the frequency domain linear and time domain partly nonlinear potential flow analyses. The frequency domain methods comprise the pulsating and the translating, pulsating Green's function methods, with the relevant source distribution over the mean wetted surface of the hull. The time domain method uses the radiation and diffraction potentials related to the mean wetted surface, implemented using Impulse Response Functions (IRF), whilst the incident wave and restoring actions are evaluated on the instantaneous wetted surface. The calculations are carried out for a range of Froude numbers, and in the case of the partly nonlinear method for different wave steepness values. Comparisons are made with available experimental measurements. The discussion focuses on the necessity for a nonlinear approach for predicting the radiation potential and the possible numerical methods for its formulation.
137-148
Chapchap, A.
dd27c776-15f8-4395-b5e0-a624ab3f2558
Hudson, D.A.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf
Ahmed, T.M.
119524e4-9aea-4019-8e84-bd4391e1bb7d
Hirdaris, S.E.
3fc55841-74b3-41ff-a8f6-fe15a080aa5c
April 2011
Chapchap, A.
dd27c776-15f8-4395-b5e0-a624ab3f2558
Hudson, D.A.
3814e08b-1993-4e78-b5a4-2598c40af8e7
Temarel, P.
b641fc50-5c8e-4540-8820-ae6779b4b0cf
Ahmed, T.M.
119524e4-9aea-4019-8e84-bd4391e1bb7d
Hirdaris, S.E.
3fc55841-74b3-41ff-a8f6-fe15a080aa5c
Chapchap, A., Hudson, D.A., Temarel, P., Ahmed, T.M. and Hirdaris, S.E.
(2011)
The influence of forward speed and non-linearities on the dynamic behaviour of a container ship in regular waves.
Transactions of The Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering, 153, part A2, .
(doi:10.2940/rina/ijme.2011.a2.wf8).
Abstract
The aim of this paper is to compare the heave and pitch motions for the S175 containership, travelling in head regular waves, obtained from the frequency domain linear and time domain partly nonlinear potential flow analyses. The frequency domain methods comprise the pulsating and the translating, pulsating Green's function methods, with the relevant source distribution over the mean wetted surface of the hull. The time domain method uses the radiation and diffraction potentials related to the mean wetted surface, implemented using Impulse Response Functions (IRF), whilst the incident wave and restoring actions are evaluated on the instantaneous wetted surface. The calculations are carried out for a range of Froude numbers, and in the case of the partly nonlinear method for different wave steepness values. Comparisons are made with available experimental measurements. The discussion focuses on the necessity for a nonlinear approach for predicting the radiation potential and the possible numerical methods for its formulation.
This record has no associated files available for download.
More information
Published date: April 2011
Organisations:
Civil Maritime & Env. Eng & Sci Unit
Identifiers
Local EPrints ID: 340186
URI: http://eprints.soton.ac.uk/id/eprint/340186
ISSN: 1479-8751
PURE UUID: e2993ea2-2fdb-4f76-9d10-8f24985ac935
Catalogue record
Date deposited: 14 Jun 2012 10:30
Last modified: 15 Mar 2024 02:48
Export record
Altmetrics
Contributors
Author:
A. Chapchap
Author:
T.M. Ahmed
Author:
S.E. Hirdaris
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
