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Added mass and damping coefficients for a uniform flexible barge using VOF

Added mass and damping coefficients for a uniform flexible barge using VOF
Added mass and damping coefficients for a uniform flexible barge using VOF
The main aim of this paper is the numerical investigation of the effect of domain size and mesh density on modeling the three-dimensional (3-D) the radiation problem using RANS CFD software. The solution for the radiation forces and moments, namely the added mass and damping coefficients, is obtained by imposing a simple harmonic oscillation to a marine structure floating in still water at the relevant mode shape. A uniform barge is used to illustrate the investigation, with the relevant symmetric mode shapes provided from the Euler beam theory. The hydrodynamic coefficients for symmetric oscillations of the barge are evaluated using an inviscid flow model in STAR-CCM+. These include the rigid body motions of heave and pitch and the 2- and 3-node distortion mode shapes. A range of mesh densities, between 1.1M and 9.6 M, are used to examine their effects with particular reference to low and high frequencies and the cross-coupling hydrodynamic coefficients between rigid and distortion modes. The influence of the damping zone on the solution is also examined. The RANS CFD predictions are compared with the results from a three-dimensional potential flow boundary element method, allowing for hull distortions.
ICHD
Kim, J.H.
449c77b0-dc96-425b-8fad-4b5e214fa93f
Lakshmynarayanana, Puramharikrishnnan
b6bde7ae-aa54-4c07-89ee-83687b85fbfa
Temarel, Pandeli
b641fc50-5c8e-4540-8820-ae6779b4b0cf
Kim, J.H.
449c77b0-dc96-425b-8fad-4b5e214fa93f
Lakshmynarayanana, Puramharikrishnnan
b6bde7ae-aa54-4c07-89ee-83687b85fbfa
Temarel, Pandeli
b641fc50-5c8e-4540-8820-ae6779b4b0cf

Kim, J.H., Lakshmynarayanana, Puramharikrishnnan and Temarel, Pandeli (2014) Added mass and damping coefficients for a uniform flexible barge using VOF. In Proceedings of the 11th International Conference on Hydrodynamics (ICHD 2014). ICHD. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The main aim of this paper is the numerical investigation of the effect of domain size and mesh density on modeling the three-dimensional (3-D) the radiation problem using RANS CFD software. The solution for the radiation forces and moments, namely the added mass and damping coefficients, is obtained by imposing a simple harmonic oscillation to a marine structure floating in still water at the relevant mode shape. A uniform barge is used to illustrate the investigation, with the relevant symmetric mode shapes provided from the Euler beam theory. The hydrodynamic coefficients for symmetric oscillations of the barge are evaluated using an inviscid flow model in STAR-CCM+. These include the rigid body motions of heave and pitch and the 2- and 3-node distortion mode shapes. A range of mesh densities, between 1.1M and 9.6 M, are used to examine their effects with particular reference to low and high frequencies and the cross-coupling hydrodynamic coefficients between rigid and distortion modes. The influence of the damping zone on the solution is also examined. The RANS CFD predictions are compared with the results from a three-dimensional potential flow boundary element method, allowing for hull distortions.

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Published date: 19 October 2014
Venue - Dates: 11th International Conference on Hydrodynamics (ICHD 2014), Singapore, Singapore, 2014-10-18 - 2014-10-23
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 382659
URI: http://eprints.soton.ac.uk/id/eprint/382659
PURE UUID: 5b27b76b-4d8c-4338-a9f7-83169bdc5a5b
ORCID for Pandeli Temarel: ORCID iD orcid.org/0000-0003-2921-1242

Catalogue record

Date deposited: 23 Oct 2015 15:29
Last modified: 08 Aug 2020 01:32

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