Numerical Analysis of Ship Motions in Beam Sea Using Unsteady RANS and Overset Grid Methods

Il-Ryong Park; Seyed Hamid Sadat Hosseini; Frederick Stern

doi:10.3744/SNAK.2008.45.2.109

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Numerical Analysis of Ship Motions in Beam Sea Using Unsteady RANS and Overset Grid Methods

Journal article

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Numerical Analysis of Ship Motions in Beam Sea Using Unsteady RANS and Overset Grid Methods

Il-Ryong Park, Seyed Hamid Sadat Hosseini and Frederick Stern

Journal of the Society of Naval Architects of Korea, Vol.45(2), pp.109-123

04/20/2008

DOI: 10.3744/SNAK.2008.45.2.109

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Abstract

The present paper presents the CFD result for a beam wave test case. An ONR tumblehome ship model with bilge keels is used. The beam wave test is for zero forward speed and roll and heave 2DOF with wave slope ak=0.156ak=0.156 and wavelength λ=1.12LPPλ=1.12LPP, with LPPLPP the ship length. The problems is solved numerically with an unsteady Reynolds averaged Navier-Stokes approach. The free surface flow is computed using a single-phase level-set method and the motions in each time step are integrated using a predictor-corrector iteration approach which uses dynamic overset grids moving with relative ship motion. The predicted CFD results for motions and forces are compared with experimental data, showing a reasonable agreement.

Details

Title: Subtitle: Numerical Analysis of Ship Motions in Beam Sea Using Unsteady RANS and Overset Grid Methods
Creators: Il-Ryong Park
Seyed Hamid Sadat Hosseini
Frederick Stern
Resource Type: Journal article
Publication Details: Journal of the Society of Naval Architects of Korea, Vol.45(2), pp.109-123
DOI: 10.3744/SNAK.2008.45.2.109
ISSN: 1225-1143
Language: English
Date published: 04/20/2008
Academic Unit: IIHR--Hydroscience and Engineering; Mechanical Engineering
Record Identifier: 9984064111902771

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