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

Ren, K; Wu, GX; Thomas, GA; (2016) Wave excited motion of a body floating on water confined between two semi-infinite ice sheets. Physics of Fluids , 28 (12) , Article 127101. 10.1063/1.4968553. Green open access

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Abstract

The wave excited motion of a body floating on water confined between two semi-infinite 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.

Type: Article
Title: Wave excited motion of a body floating on water confined between two semi-infinite ice sheets
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.4968553
Publisher version: http://dx.doi.org/10.1063/1.4968553
Language: English
Additional information: The following article appeared in Physics of Fluids [Ren, K; Wu, GX; Thomas, GA; (2016) Wave excited motion of a body floating on water confined between two semi-infinite ice sheets. Physics of Fluids, 28 (12), Article 127101. 10.1063/1.4968553] and may be found at http://dx.doi.org/10.1063/1.4968553. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1532476
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