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A fast numerical method for trimaran wave resistance prediction

A fast numerical method for trimaran wave resistance prediction
A fast numerical method for trimaran wave resistance prediction
The optimisation of a trimaran configuration is not trivial due to the influence of longitudinal and transverse clearance between the hulls.This sensitivity is illustrated in the predictions presented.

The proposed calculation procedure is based on an extension of the slender ship theory of Noblesse. In particular the highly oscillatory terms within the associated Kochin function are expanded as series of products of Bessel functions and Legendre polynomials to facilitate faster computation and to separate out specific parameter dependencies. These objectives allow calculation of constituent terms of the Kochin function as a function of hull clearance parameters,which may be stored externally to the resistance calculation software.

The rapid calculation procedure allows identification of optimal trimaran configurations. Comparison between the numerical predictions and experimental measurement based on the authors’ earlier experimental investigations and those of other researchers (Degiuli etal.,2003) has shown good agreement.

The wave resistance differences for symmetric and asymmetric outer hull forms for three distinct
cases are presented and discussed.
ocean engineering, trimaran, wave resistance, novel numerical method
1571-9952
70-84
Yu, Wei
86977b56-7eae-4fab-a3c1-e990bb7f7490
Chen, Xu-jun
761508f7-17c1-4a89-ba03-c3106fef67f6
Wu, Guang-huai
d8c2d319-96e7-4f01-b46d-01694d86d843
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Yu, Wei
86977b56-7eae-4fab-a3c1-e990bb7f7490
Chen, Xu-jun
761508f7-17c1-4a89-ba03-c3106fef67f6
Wu, Guang-huai
d8c2d319-96e7-4f01-b46d-01694d86d843
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178

Yu, Wei, Chen, Xu-jun, Wu, Guang-huai and Hearn, Grant (2015) A fast numerical method for trimaran wave resistance prediction. Elsevier Ocean Engineering Series, 107, 70-84. (doi:10.1016/j.oceaneng.2015.07.008).

Record type: Article

Abstract

The optimisation of a trimaran configuration is not trivial due to the influence of longitudinal and transverse clearance between the hulls.This sensitivity is illustrated in the predictions presented.

The proposed calculation procedure is based on an extension of the slender ship theory of Noblesse. In particular the highly oscillatory terms within the associated Kochin function are expanded as series of products of Bessel functions and Legendre polynomials to facilitate faster computation and to separate out specific parameter dependencies. These objectives allow calculation of constituent terms of the Kochin function as a function of hull clearance parameters,which may be stored externally to the resistance calculation software.

The rapid calculation procedure allows identification of optimal trimaran configurations. Comparison between the numerical predictions and experimental measurement based on the authors’ earlier experimental investigations and those of other researchers (Degiuli etal.,2003) has shown good agreement.

The wave resistance differences for symmetric and asymmetric outer hull forms for three distinct
cases are presented and discussed.

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Accepted/In Press date: 8 July 2015
e-pub ahead of print date: 12 August 2015
Published date: 1 October 2015
Keywords: ocean engineering, trimaran, wave resistance, novel numerical method
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 399164
URI: http://eprints.soton.ac.uk/id/eprint/399164
ISSN: 1571-9952
PURE UUID: d63f0590-c14e-4bb8-bb17-3d4dd8518308

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Date deposited: 09 Aug 2016 14:08
Last modified: 08 Jan 2022 00:50

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Contributors

Author: Wei Yu
Author: Xu-jun Chen
Author: Guang-huai Wu
Author: Grant Hearn

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