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Wave excited motion of a body floating on water confined between two semi-infinite ice sheets


Ren, K and Wu, GX and Thomas, GA, Wave excited motion of a body floating on water confined between two semi-infinite ice sheets, Physics of Fluids, 28, (12) Article 127101. ISSN 1070-6631 (2016) [Refereed Article]


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Copyright 2016 The Authors. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Physics of Fluids and may be found at

DOI: doi:10.1063/1.4968553


The wave excited motion of a body floating on water confined between two semiinfinite ice sheets is investigated. The ice sheet is treated as an elastic thin plate and water is treated as an ideal and incompressible fluid. The linearized velocity potential theory is adopted in the frequency domain and problems are solved by the method of matched eigenfunctions expansion. The fluid domain is divided into sub-regions and in each sub-region the velocity potential is expanded into a series of eigenfunctions satisfying the governing equation and the boundary conditions on horizontal planes including the free surface and ice sheets. Matching is conducted at the interfaces of two neighbouring regions to ensure the continuity of the pressure and velocity, and the unknown coefficients in the expressions are obtained as a result. The behaviour of the added mass and damping coefficients of the floating body with the effect of the ice sheets and the excitation force are analysed. They are found to vary oscillatorily with the wave number, which is different from that for a floating body in the open sea. The motion of the body confined between ice sheets is investigated, in particular its resonant behaviour with extremely large motion found to be possible under certain conditions. Standing waves within the polynya are also observed.

Item Details

Item Type:Refereed Article
Keywords:transmission coefficient, free surface, ice, ice sheets, hydrodynamic waves, elasticity, boundary value problems, wave interaction, ocean waves
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Thomas, GA (Professor Giles Thomas)
ID Code:126131
Year Published:2016
Web of Science® Times Cited:21
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2018-05-24
Last Modified:2018-08-28
Downloads:117 View Download Statistics

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