CFD investigation into the effect of GM variations on ship manoeuvring characteristics

Soonseok Song; Daejeong Kim; Saishuai Dai

doi:10.1016/j.oceaneng.2023.116472

CFD investigation into the effect of GM variations on ship manoeuvring characteristics

Soonseok Song, Daejeong Kim^*, Saishuai Dai

^*Corresponding author for this work

Naval Architecture, Ocean And Marine Engineering

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

4 Citations (Scopus)

Abstract

The change in a ship's loading condition may induce a displacement of its vertical centre of gravity, subsequently impacting the metacentric height (GM) of the vessel. Such alterations can have unforeseen effects on the ship's manoeuvring behaviour. This study investigates these effects by developing a free running manoeuvre model for the KRISO Containership (KCS) based on the Unsteady Reynolds-Averaged Navier-Stokes (URANS) method. A multi-level dynamic overset grid and the body-force propeller method were employed to simulate the ship motion involving rudder manipulations. The numerical calculations of zigzag and turning manoeuvre revealed that the variations in GM produce significant alternations in the roll motion during manoeuvres, consequently affecting the zigzag and turning trajectories of the vessel.

Original language	English
Article number	116472
Number of pages	10
Journal	Ocean Engineering
Volume	291
Early online date	9 Dec 2023
DOIs	https://doi.org/10.1016/j.oceaneng.2023.116472
Publication status	Published - 1 Jan 2024

Keywords

Computational fluid dynamics
Free running simulation
Manoeuvrability
Metacentric height (GM)

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10.1016/j.oceaneng.2023.116472

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title = "CFD investigation into the effect of GM variations on ship manoeuvring characteristics",

abstract = "The change in a ship's loading condition may induce a displacement of its vertical centre of gravity, subsequently impacting the metacentric height (GM) of the vessel. Such alterations can have unforeseen effects on the ship's manoeuvring behaviour. This study investigates these effects by developing a free running manoeuvre model for the KRISO Containership (KCS) based on the Unsteady Reynolds-Averaged Navier-Stokes (URANS) method. A multi-level dynamic overset grid and the body-force propeller method were employed to simulate the ship motion involving rudder manipulations. The numerical calculations of zigzag and turning manoeuvre revealed that the variations in GM produce significant alternations in the roll motion during manoeuvres, consequently affecting the zigzag and turning trajectories of the vessel.",

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T1 - CFD investigation into the effect of GM variations on ship manoeuvring characteristics

AU - Song, Soonseok

AU - Kim, Daejeong

AU - Dai, Saishuai

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N2 - The change in a ship's loading condition may induce a displacement of its vertical centre of gravity, subsequently impacting the metacentric height (GM) of the vessel. Such alterations can have unforeseen effects on the ship's manoeuvring behaviour. This study investigates these effects by developing a free running manoeuvre model for the KRISO Containership (KCS) based on the Unsteady Reynolds-Averaged Navier-Stokes (URANS) method. A multi-level dynamic overset grid and the body-force propeller method were employed to simulate the ship motion involving rudder manipulations. The numerical calculations of zigzag and turning manoeuvre revealed that the variations in GM produce significant alternations in the roll motion during manoeuvres, consequently affecting the zigzag and turning trajectories of the vessel.

AB - The change in a ship's loading condition may induce a displacement of its vertical centre of gravity, subsequently impacting the metacentric height (GM) of the vessel. Such alterations can have unforeseen effects on the ship's manoeuvring behaviour. This study investigates these effects by developing a free running manoeuvre model for the KRISO Containership (KCS) based on the Unsteady Reynolds-Averaged Navier-Stokes (URANS) method. A multi-level dynamic overset grid and the body-force propeller method were employed to simulate the ship motion involving rudder manipulations. The numerical calculations of zigzag and turning manoeuvre revealed that the variations in GM produce significant alternations in the roll motion during manoeuvres, consequently affecting the zigzag and turning trajectories of the vessel.

KW - Computational fluid dynamics

KW - Free running simulation

KW - Manoeuvrability

KW - Metacentric height (GM)

U2 - 10.1016/j.oceaneng.2023.116472

DO - 10.1016/j.oceaneng.2023.116472

M3 - Article

AN - SCOPUS:85179498969

SN - 0029-8018

VL - 291

JO - Ocean Engineering

JF - Ocean Engineering

M1 - 116472

ER -

CFD investigation into the effect of GM variations on ship manoeuvring characteristics

Abstract

Keywords

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