Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet
The hydrodynamic problem of wave interaction with a ship floating on the water surface near a semi-infinite ice sheet is considered based on the linearized velocity potential theory for fluid flow and the thin elastic plate model for ice sheet deflection. The properties of an ice sheet are assumed t...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10139496 2023-12-24T10:17:35+01:00 Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet Li, ZF Wu, GX 2021-12-01 text https://discovery.ucl.ac.uk/id/eprint/10139496/7/Wu_5.0071972.pdf https://discovery.ucl.ac.uk/id/eprint/10139496/ eng eng AIP Publishing https://discovery.ucl.ac.uk/id/eprint/10139496/7/Wu_5.0071972.pdf https://discovery.ucl.ac.uk/id/eprint/10139496/ open Physics of Fluids , 33 (12) , Article 127101. (2021) Hydrodynamical interactions Potential theory Boundary integral methods Wave mechanics Article 2021 ftucl 2023-11-27T13:07:26Z The hydrodynamic problem of wave interaction with a ship floating on the water surface near a semi-infinite ice sheet is considered based on the linearized velocity potential theory for fluid flow and the thin elastic plate model for ice sheet deflection. The properties of an ice sheet are assumed to be uniform, and zero bending moment and shear force conditions are enforced at the ice edge. The Green function is first derived, which satisfies both boundary conditions on the ice sheet and free surface, as well as all other conditions apart from that on the ship surface. Through the Green function, the differential equation for the velocity potential is converted into a boundary integral equation over the ship surface only. An extended surface, which is the waterplane of the ship, is introduced into the integral equation to remove the effect of irregular wave frequencies. The asymptotic formula of the Green function is derived and its behaviors are discussed, through which an approximate and efficient solution procedure for the coupled ship/wave/ice sheet interactions is developed. Extensive numerical results through the added mass, damping coefficient and wave exciting force are provided for an icebreaker of modern design. It is found that the approximate method can provide accurate results even when the ship is near the ice edge, through which some insight into the complex ship/ice sheet interaction is investigated. Extensive results are provided for the ship at different positions, for different ice sheet thicknesses and incident wave angles, and their physical implications are discussed. Article in Journal/Newspaper Ice Sheet Icebreaker University College London: UCL Discovery |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Hydrodynamical interactions Potential theory Boundary integral methods Wave mechanics |
spellingShingle |
Hydrodynamical interactions Potential theory Boundary integral methods Wave mechanics Li, ZF Wu, GX Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
topic_facet |
Hydrodynamical interactions Potential theory Boundary integral methods Wave mechanics |
description |
The hydrodynamic problem of wave interaction with a ship floating on the water surface near a semi-infinite ice sheet is considered based on the linearized velocity potential theory for fluid flow and the thin elastic plate model for ice sheet deflection. The properties of an ice sheet are assumed to be uniform, and zero bending moment and shear force conditions are enforced at the ice edge. The Green function is first derived, which satisfies both boundary conditions on the ice sheet and free surface, as well as all other conditions apart from that on the ship surface. Through the Green function, the differential equation for the velocity potential is converted into a boundary integral equation over the ship surface only. An extended surface, which is the waterplane of the ship, is introduced into the integral equation to remove the effect of irregular wave frequencies. The asymptotic formula of the Green function is derived and its behaviors are discussed, through which an approximate and efficient solution procedure for the coupled ship/wave/ice sheet interactions is developed. Extensive numerical results through the added mass, damping coefficient and wave exciting force are provided for an icebreaker of modern design. It is found that the approximate method can provide accurate results even when the ship is near the ice edge, through which some insight into the complex ship/ice sheet interaction is investigated. Extensive results are provided for the ship at different positions, for different ice sheet thicknesses and incident wave angles, and their physical implications are discussed. |
format |
Article in Journal/Newspaper |
author |
Li, ZF Wu, GX |
author_facet |
Li, ZF Wu, GX |
author_sort |
Li, ZF |
title |
Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
title_short |
Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
title_full |
Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
title_fullStr |
Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
title_full_unstemmed |
Hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
title_sort |
hydrodynamic force on a ship floating on the water surface near a semi-infinite ice sheet |
publisher |
AIP Publishing |
publishDate |
2021 |
url |
https://discovery.ucl.ac.uk/id/eprint/10139496/7/Wu_5.0071972.pdf https://discovery.ucl.ac.uk/id/eprint/10139496/ |
genre |
Ice Sheet Icebreaker |
genre_facet |
Ice Sheet Icebreaker |
op_source |
Physics of Fluids , 33 (12) , Article 127101. (2021) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10139496/7/Wu_5.0071972.pdf https://discovery.ucl.ac.uk/id/eprint/10139496/ |
op_rights |
open |
_version_ |
1786205808828088320 |