Numerical evaluation of a ship's manoeuvrability and course keeping control under various wave conditions using CFD
Numerical evaluation of a ship's manoeuvrability and course keeping control under various wave conditions using CFD
It is critical to estimate the manoeuvring behaviours of ships in waves since it is closely associated with navigation safety at sea. This study aims to predict the wavelength effects on the ship manoeuvring behaviours using a Computational Fluid Dynamics (CFD) based technique which enables resolving the complex interactions between hull, rudder, and propeller in waves. An Unsteady Reynolds-Averaged Navier-Stokes (URANS) model of the well-known benchmarking KRISO Container Ship (KCS) was developed using the dynamic overset grid technique to simulate the ship motions and rudder deflection. To represent the effects of the propeller, the body force method using an infinite-blade actuator disk was used. The manoeuvring analyses were carried out in bow waves of wavelength-to-ship-length ratios varying between 0.7 and 2.0 for constant wave height. Two representative free-running manoeuvres were conducted, namely, course keeping control, and standard turning circle manoeuvres. The analyses revealed that the wavelength has a significant influence on the manoeuvring performance, especially for the approach speeds, ship motions, and manoeuvring indices. The key findings of this research will increase the understanding of ship manoeuvrability in waves and therefore help to enhance navigation safety at sea.
Kim, Daejeong
2730cb06-0014-46d4-a4d0-1b27d65668b7
Song, Soonseok
5eab39f4-35ac-42b5-b01b-8c4a9d53f2b1
Jeong, Byongug
0ebcb8a7-cc7d-47e3-a92c-f988592b9949
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
1 October 2021
Kim, Daejeong
2730cb06-0014-46d4-a4d0-1b27d65668b7
Song, Soonseok
5eab39f4-35ac-42b5-b01b-8c4a9d53f2b1
Jeong, Byongug
0ebcb8a7-cc7d-47e3-a92c-f988592b9949
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Kim, Daejeong, Song, Soonseok, Jeong, Byongug and Tezdogan, Tahsin
(2021)
Numerical evaluation of a ship's manoeuvrability and course keeping control under various wave conditions using CFD.
Ocean Engineering.
(doi:10.1016/j.oceaneng.2021.109615).
Abstract
It is critical to estimate the manoeuvring behaviours of ships in waves since it is closely associated with navigation safety at sea. This study aims to predict the wavelength effects on the ship manoeuvring behaviours using a Computational Fluid Dynamics (CFD) based technique which enables resolving the complex interactions between hull, rudder, and propeller in waves. An Unsteady Reynolds-Averaged Navier-Stokes (URANS) model of the well-known benchmarking KRISO Container Ship (KCS) was developed using the dynamic overset grid technique to simulate the ship motions and rudder deflection. To represent the effects of the propeller, the body force method using an infinite-blade actuator disk was used. The manoeuvring analyses were carried out in bow waves of wavelength-to-ship-length ratios varying between 0.7 and 2.0 for constant wave height. Two representative free-running manoeuvres were conducted, namely, course keeping control, and standard turning circle manoeuvres. The analyses revealed that the wavelength has a significant influence on the manoeuvring performance, especially for the approach speeds, ship motions, and manoeuvring indices. The key findings of this research will increase the understanding of ship manoeuvrability in waves and therefore help to enhance navigation safety at sea.
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Accepted/In Press date: 4 August 2021
e-pub ahead of print date: 12 August 2021
Published date: 1 October 2021
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Local EPrints ID: 473896
URI: http://eprints.soton.ac.uk/id/eprint/473896
ISSN: 0029-8018
PURE UUID: 5e7f80c4-c2fa-43bb-8f6d-47f48a21e3cd
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Date deposited: 02 Feb 2023 17:43
Last modified: 17 Mar 2024 04:18
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Author:
Daejeong Kim
Author:
Soonseok Song
Author:
Byongug Jeong
Author:
Tahsin Tezdogan
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