Time domain non linear strip theory for ship motions
Time domain non linear strip theory for ship motions
A new implementation of strip theory is proposed based on the strip theory by Salvesen, et al. [1] and early work by Westlake and Wilson [2]. Compared with traditional strip theory, the main difference is that the calculation is carried out in the time domain. This makes it possible to cope with relatively large-amplitude motions and non-constant forward speed problems.
At each time step, the exact underwater sections are extracted; the velocity potential is required to satisfy this instantaneous body boundary condition, therefore the added mass, damping coefficients and exciting forces are time-variant, which produce a non-linearity. The diffraction force is added to work of Westlake and Wilson, and the results show the effect of diffraction force is significant.
33-47
Fan, Y.T.
ccaa181e-b673-4498-9b5f-b2f3149f8ad5
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
2004
Fan, Y.T.
ccaa181e-b673-4498-9b5f-b2f3149f8ad5
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Fan, Y.T. and Wilson, P.A.
(2004)
Time domain non linear strip theory for ship motions.
Transactions of The Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering, 146 (3), .
(doi:10.3940/rina.ijme.2004.a3.3404).
Abstract
A new implementation of strip theory is proposed based on the strip theory by Salvesen, et al. [1] and early work by Westlake and Wilson [2]. Compared with traditional strip theory, the main difference is that the calculation is carried out in the time domain. This makes it possible to cope with relatively large-amplitude motions and non-constant forward speed problems.
At each time step, the exact underwater sections are extracted; the velocity potential is required to satisfy this instantaneous body boundary condition, therefore the added mass, damping coefficients and exciting forces are time-variant, which produce a non-linearity. The diffraction force is added to work of Westlake and Wilson, and the results show the effect of diffraction force is significant.
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Published date: 2004
Additional Information:
IJME3404
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Local EPrints ID: 22706
URI: http://eprints.soton.ac.uk/id/eprint/22706
ISSN: 1479-8751
PURE UUID: 327bb261-de87-479a-af9b-451d6ab79476
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Date deposited: 22 Mar 2006
Last modified: 16 Mar 2024 02:35
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Author:
Y.T. Fan
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