Large amplitude motions of a submerged circular cylinder in water with an ice cover
The hydrodynamic problem of a circular cylinder undergoing large amplitude oscillations in water covered by an ice sheet is investigated. The ice sheet is modelled by a thin elastic sheet and uniform physical properties are assumed. The fluid is assumed to be inviscid, incompressible and homogeneous...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
2017
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| Online Access: | https://discovery.ucl.ac.uk/id/eprint/1542198/1/EJMFLU_2016_442_Manuscript.pdf https://discovery.ucl.ac.uk/id/eprint/1542198/ |
| Summary: | The hydrodynamic problem of a circular cylinder undergoing large amplitude oscillations in water covered by an ice sheet is investigated. The ice sheet is modelled by a thin elastic sheet and uniform physical properties are assumed. The fluid is assumed to be inviscid, incompressible and homogeneous, and the depth to be infinite. The boundary condition on the ice sheet is linearized and satisfied on its mean position, while the fully nonlinear boundary condition is imposed on the instantaneous position of the body surface. The velocity potential is formulated by the multipole expansion method in the polar coordinate system with its origin fixed at the centre of the cylinder. Detailed results through the hydrodynamic force and deformation of the ice sheet are provided. The effects of the ice sheet properties, and motion amplitude and frequency are investigated. |
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