Comparison of nonlinear one- and two-way FFSI methods for the prediction of the symmetric response of a containership in waves

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@article{69e39d20b21f41ff90a16c05dbdcd9af,
title = "Comparison of nonlinear one- and two-way FFSI methods for the prediction of the symmetric response of a containership in waves",
abstract = "This paper presents an investigation on the symmetric motions and loads of the S-175 containership undergoing severe green water impact that may result in high frequency whipping. Symmetric dynamic response results from two Flexible Fluid Structure Interaction approaches, namely one- and two-way coupling methods are assessed and compared in regular head waves. Numerical computations are performed by coupling CFD (Star-CCM{\th}) and FEA (Abaqus). The creative meshing strategy adopted for RANS CFD simulations is presented and numerical predictions are compared against experimental measurements over a range of wave frequencies. It is concluded that heave, pitch and the linear wave frequency component in the wave loads are predicted well by the two approaches. However, overall two-way coupling compares better with measurements and a significant difference between the two different methods is especially noted in the high-frequency whipping domain. It is concluded that one-way coupling underestimates the high-frequency vibratory components and therefore care must be enforced when applying this method for calculating hydroelastic responses in waves.",
keywords = "Finite element analysis (FEA), Flexible fluid structure interactions (FFSI), Hydroelasticity of ships, Reynolds averaged Navier Stokes computational fluid dynamics (RANS CFD), Wave loads",
author = "Lakshmynarayanana, {P: A. K.} and Spyros Hirdaris",
year = "2020",
month = "5",
day = "1",
doi = "10.1016/j.oceaneng.2020.107179",
language = "English",
volume = "203",
journal = "Ocean Engineering",
issn = "0029-8018",

}

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TY - JOUR

T1 - Comparison of nonlinear one- and two-way FFSI methods for the prediction of the symmetric response of a containership in waves

AU - Lakshmynarayanana, P: A. K.

AU - Hirdaris, Spyros

PY - 2020/5/1

Y1 - 2020/5/1

N2 - This paper presents an investigation on the symmetric motions and loads of the S-175 containership undergoing severe green water impact that may result in high frequency whipping. Symmetric dynamic response results from two Flexible Fluid Structure Interaction approaches, namely one- and two-way coupling methods are assessed and compared in regular head waves. Numerical computations are performed by coupling CFD (Star-CCMþ) and FEA (Abaqus). The creative meshing strategy adopted for RANS CFD simulations is presented and numerical predictions are compared against experimental measurements over a range of wave frequencies. It is concluded that heave, pitch and the linear wave frequency component in the wave loads are predicted well by the two approaches. However, overall two-way coupling compares better with measurements and a significant difference between the two different methods is especially noted in the high-frequency whipping domain. It is concluded that one-way coupling underestimates the high-frequency vibratory components and therefore care must be enforced when applying this method for calculating hydroelastic responses in waves.

AB - This paper presents an investigation on the symmetric motions and loads of the S-175 containership undergoing severe green water impact that may result in high frequency whipping. Symmetric dynamic response results from two Flexible Fluid Structure Interaction approaches, namely one- and two-way coupling methods are assessed and compared in regular head waves. Numerical computations are performed by coupling CFD (Star-CCMþ) and FEA (Abaqus). The creative meshing strategy adopted for RANS CFD simulations is presented and numerical predictions are compared against experimental measurements over a range of wave frequencies. It is concluded that heave, pitch and the linear wave frequency component in the wave loads are predicted well by the two approaches. However, overall two-way coupling compares better with measurements and a significant difference between the two different methods is especially noted in the high-frequency whipping domain. It is concluded that one-way coupling underestimates the high-frequency vibratory components and therefore care must be enforced when applying this method for calculating hydroelastic responses in waves.

KW - Finite element analysis (FEA)

KW - Flexible fluid structure interactions (FFSI)

KW - Hydroelasticity of ships

KW - Reynolds averaged Navier Stokes computational fluid dynamics (RANS CFD)

KW - Wave loads

UR - http://www.scopus.com/inward/record.url?scp=85081247080&partnerID=8YFLogxK

U2 - 10.1016/j.oceaneng.2020.107179

DO - 10.1016/j.oceaneng.2020.107179

M3 - Article

AN - SCOPUS:85081247080

VL - 203

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

M1 - 107179

ER -

ID: 41489489