Hydrodynamic analysis of ship manoeuvrability in shallow water using high-fidelity URANS computations
Hydrodynamic analysis of ship manoeuvrability in shallow water using high-fidelity URANS computations
The manoeuvring performance of a ship in shallow water is substantially different from its performance in deep water, attributed to shallow water effects caused by the presence of a finite water depth. Without a doubt a ship will navigate in areas of shallow water at various times during its operational life (such as when approaching harbours or ports), which underscores the importance of understanding the shallow water effects on ship manoeuvrability. In the present paper, the manoeuvrability of the KRISO Container Ship (KCS) model in different shallow water conditions was comprehensively analysed by means of the unsteady Reynolds-Averaged Navier-Stokes (URANS) computations coupled with the equations of rigid body motion with full six degrees of freedom (6DOF). A dynamic overset grid approach was implemented to allow the ship hull to move in 6DOF in a computational domain and to enable the rudder to be deflected according to a rudder controller for free-running manoeuvres. A series of manoeuvring simulations were performed in shallow waters with water depth to draft ratios varying between 1.2 and 4.0, and partially validated with the available experimental data from a free running test. The numerical results revealed that the ship advance, transfer, and tactical diameter mainly increased with the decrease in the ratio of water depth to draft, closely associated with the complicated interactions between the hull wake, boundary layer, propeller, vortex, and sea floor.
Computational fluid dynamics, Manoeuvring hydrodynamic loads, RANS solver, Shallow water, Ship manoeuvrability
Kim, Daejeong
2730cb06-0014-46d4-a4d0-1b27d65668b7
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Incecik, Atilla
25a12ee2-7ba6-47cf-af5d-a79de4c6a2c4
June 2022
Kim, Daejeong
2730cb06-0014-46d4-a4d0-1b27d65668b7
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Incecik, Atilla
25a12ee2-7ba6-47cf-af5d-a79de4c6a2c4
Kim, Daejeong, Tezdogan, Tahsin and Incecik, Atilla
(2022)
Hydrodynamic analysis of ship manoeuvrability in shallow water using high-fidelity URANS computations.
Applied Ocean Research, 123, [103176].
(doi:10.1016/j.apor.2022.103176).
Abstract
The manoeuvring performance of a ship in shallow water is substantially different from its performance in deep water, attributed to shallow water effects caused by the presence of a finite water depth. Without a doubt a ship will navigate in areas of shallow water at various times during its operational life (such as when approaching harbours or ports), which underscores the importance of understanding the shallow water effects on ship manoeuvrability. In the present paper, the manoeuvrability of the KRISO Container Ship (KCS) model in different shallow water conditions was comprehensively analysed by means of the unsteady Reynolds-Averaged Navier-Stokes (URANS) computations coupled with the equations of rigid body motion with full six degrees of freedom (6DOF). A dynamic overset grid approach was implemented to allow the ship hull to move in 6DOF in a computational domain and to enable the rudder to be deflected according to a rudder controller for free-running manoeuvres. A series of manoeuvring simulations were performed in shallow waters with water depth to draft ratios varying between 1.2 and 4.0, and partially validated with the available experimental data from a free running test. The numerical results revealed that the ship advance, transfer, and tactical diameter mainly increased with the decrease in the ratio of water depth to draft, closely associated with the complicated interactions between the hull wake, boundary layer, propeller, vortex, and sea floor.
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More information
Accepted/In Press date: 1 April 2022
e-pub ahead of print date: 22 April 2022
Published date: June 2022
Additional Information:
Funding Information:
It should be noted that the results were obtained using the ARCHIE-WeSt High Performance Computer (www.archie-west.ac.uk) based at the University of Strathclyde.
Publisher Copyright:
© 2022 The Author(s)
Keywords:
Computational fluid dynamics, Manoeuvring hydrodynamic loads, RANS solver, Shallow water, Ship manoeuvrability
Identifiers
Local EPrints ID: 473872
URI: http://eprints.soton.ac.uk/id/eprint/473872
ISSN: 0141-1187
PURE UUID: c4472962-0474-4695-a36f-6a2b6fe5a673
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Date deposited: 02 Feb 2023 17:34
Last modified: 17 Mar 2024 04:18
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Author:
Daejeong Kim
Author:
Tahsin Tezdogan
Author:
Atilla Incecik
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