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A numerical study of drift angle effect on hydrodynamic performance of a fully appended container ship in head waves

A numerical study of drift angle effect on hydrodynamic performance of a fully appended container ship in head waves
A numerical study of drift angle effect on hydrodynamic performance of a fully appended container ship in head waves
To accurately predict the ship’s manoeuvring and powering performance in actual seaways, it is crucial to gain an enhanced comprehension of the hydrodynamic behaviour of vessels navigating through waves. A critical component is the accurate determination of forces exerted on the hull and its appendages when the ship is operating at an angle of drift in waves. This is also significant for wind-assisted ships, which often operate with non-zero drift and rudder angles. Therefore, a deeper understanding of how drift and rudder angles affect hull–propeller–rudder interaction is required for investigating energy efficiency in waves. In this paper, a thorough numerical study is conducted to investigate the hydrodynamic interaction among the hull, propeller and rudder of the benchmark KRISO Container Ship (KCS) in regular head waves. The KCS is simulated at drift angles of −10°, 0°and +10°, combined with a series of rudder angles (−20°to +20°), representing quasi-static phases of actual ship manoeuvring in waves. Blade Element Momentum theory (BEMt) is adopted for modelling propeller action in all cases. Good agreement is found between experimental and numerical predictions regarding hull forces. This study contributes to better ship design due to ship manoeuvring and operations of wind-assisted vessels.
Blade Element Momentum Theory, Computational Fluid Dynamics (CFD), Drift angle and rudder angle, Hull-propeller-rudder interaction, Ship manoeuvring in waves, Wind Assist
0029-8018
Zhang, Yifu
201620b2-8af6-4747-8f3a-923c92fea4f1
Diaz-Ojeda, Hector
6990e39d-cb55-4dbe-b943-2d728e74a0a7
Wind́en, Bj̈orn
ef04056c-9728-4bd1-8f8b-5e5e5bbbe2a2
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Zhang, Yifu
201620b2-8af6-4747-8f3a-923c92fea4f1
Diaz-Ojeda, Hector
6990e39d-cb55-4dbe-b943-2d728e74a0a7
Wind́en, Bj̈orn
ef04056c-9728-4bd1-8f8b-5e5e5bbbe2a2
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Zhang, Yifu, Diaz-Ojeda, Hector, Wind́en, Bj̈orn, Hudson, Dominic and Turnock, Stephen (2024) A numerical study of drift angle effect on hydrodynamic performance of a fully appended container ship in head waves. Ocean Engineering, 313 (Part 1), [119343]. (doi:10.1016/j.oceaneng.2024.119343).

Record type: Article

Abstract

To accurately predict the ship’s manoeuvring and powering performance in actual seaways, it is crucial to gain an enhanced comprehension of the hydrodynamic behaviour of vessels navigating through waves. A critical component is the accurate determination of forces exerted on the hull and its appendages when the ship is operating at an angle of drift in waves. This is also significant for wind-assisted ships, which often operate with non-zero drift and rudder angles. Therefore, a deeper understanding of how drift and rudder angles affect hull–propeller–rudder interaction is required for investigating energy efficiency in waves. In this paper, a thorough numerical study is conducted to investigate the hydrodynamic interaction among the hull, propeller and rudder of the benchmark KRISO Container Ship (KCS) in regular head waves. The KCS is simulated at drift angles of −10°, 0°and +10°, combined with a series of rudder angles (−20°to +20°), representing quasi-static phases of actual ship manoeuvring in waves. Blade Element Momentum theory (BEMt) is adopted for modelling propeller action in all cases. Good agreement is found between experimental and numerical predictions regarding hull forces. This study contributes to better ship design due to ship manoeuvring and operations of wind-assisted vessels.

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More information

Accepted/In Press date: 22 September 2024
e-pub ahead of print date: 8 October 2024
Published date: 8 October 2024
Keywords: Blade Element Momentum Theory, Computational Fluid Dynamics (CFD), Drift angle and rudder angle, Hull-propeller-rudder interaction, Ship manoeuvring in waves, Wind Assist

Identifiers

Local EPrints ID: 494874
URI: http://eprints.soton.ac.uk/id/eprint/494874
ISSN: 0029-8018
PURE UUID: 13582058-63bc-4fea-8892-1853b01b3f6e
ORCID for Yifu Zhang: ORCID iD orcid.org/0000-0001-6980-3985
ORCID for Dominic Hudson: ORCID iD orcid.org/0000-0002-2012-6255
ORCID for Stephen Turnock: ORCID iD orcid.org/0000-0001-6288-0400

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Date deposited: 18 Oct 2024 16:48
Last modified: 23 Nov 2024 03:08

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Contributors

Author: Yifu Zhang ORCID iD
Author: Hector Diaz-Ojeda
Author: Bj̈orn Wind́en
Author: Dominic Hudson ORCID iD
Author: Stephen Turnock ORCID iD

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