Study of Froude and Hughes methods by numerical towing tank

Q. Gao; D. Vassalos

doi:10.3940/rina.ijme.2011.a2.wf4

Study of Froude and Hughes methods by numerical towing tank

Q. Gao, D. Vassalos

Naval Architecture, Ocean And Marine Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The resistance of a cargo ship is calculated by numerical towing tank. RANSE multi-phase parallel solver with K-w SST turbulent model and VOF formulation is applied. Computational results from double model (without free surface) are used to obtain 1+k in Hughes’ method and those with free surface are analyzed by both Froude and Hughes’ approaches to investigate model and full scale correlation. ITTC recommended uncertainty study is carried out to evaluate numerical error due to grid density. The computed wave elevation, wake distribution and resistance components by fine, medium and coarse meshes are cross-compared and validated against experiment data where applicable. It is found that grid resolution has most effect on wave pattern. The predicted friction and viscous-pressure resistance coefficients are relatively grid independent from present numerical simulation

Original language	English
Pages (from-to)	A99-A104
Number of pages	6
Journal	International Journal of Maritime Engineering
Volume	153
Issue number	A2
DOIs	https://doi.org/10.3940/rina.ijme.2011.a2.wf4
Publication status	Published - Jun 2011

Keywords

CFD simulation
cargo ship resistance
wave elevation

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title = "Study of Froude and Hughes methods by numerical towing tank",

abstract = "The resistance of a cargo ship is calculated by numerical towing tank. RANSE multi-phase parallel solver with K-w SST turbulent model and VOF formulation is applied. Computational results from double model (without free surface) are used to obtain 1+k in Hughes{\textquoteright} method and those with free surface are analyzed by both Froude and Hughes{\textquoteright} approaches to investigate model and full scale correlation. ITTC recommended uncertainty study is carried out to evaluate numerical error due to grid density. The computed wave elevation, wake distribution and resistance components by fine, medium and coarse meshes are cross-compared and validated against experiment data where applicable. It is found that grid resolution has most effect on wave pattern. The predicted friction and viscous-pressure resistance coefficients are relatively grid independent from present numerical simulation",

keywords = "CFD simulation, cargo ship resistance, wave elevation",

author = "Q. Gao and D. Vassalos",

year = "2011",

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AU - Vassalos, D.

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AB - The resistance of a cargo ship is calculated by numerical towing tank. RANSE multi-phase parallel solver with K-w SST turbulent model and VOF formulation is applied. Computational results from double model (without free surface) are used to obtain 1+k in Hughes’ method and those with free surface are analyzed by both Froude and Hughes’ approaches to investigate model and full scale correlation. ITTC recommended uncertainty study is carried out to evaluate numerical error due to grid density. The computed wave elevation, wake distribution and resistance components by fine, medium and coarse meshes are cross-compared and validated against experiment data where applicable. It is found that grid resolution has most effect on wave pattern. The predicted friction and viscous-pressure resistance coefficients are relatively grid independent from present numerical simulation

KW - CFD simulation

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KW - wave elevation

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SP - A99-A104

JO - International Journal of Maritime Engineering

JF - International Journal of Maritime Engineering

SN - 1479-8751

IS - A2

ER -

Study of Froude and Hughes methods by numerical towing tank

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Keywords

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