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Water wave radiation by a sphere submerged in water with an ice-cover

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Abstract

Using the multipoles method, we formulate the problems of radiation (both heave and sway) of water waves by a submerged sphere in deep as well as in uniform finite depth water with an ice-cover, with the ice-cover being modelled as an elastic plate of very small thickness. In each case this leads to an infinite system of linear equations which are solved numerically by standard techniques. The added-mass and damping coefficients for a heaving and swaying sphere are obtained and depicted graphically against the wave number for various values of the radius of the submerged sphere and flexural rigidity of the ice-cover to show the effect of the presence of ice-cover on these quantities. When the flexural rigidity is taken to be zero, the numerical results for the added-mass and damping coefficient for water with a free surface are recovered.

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  1. Physics and Applied Mathematics Unit, Indian Statistical Institute, 203, B.T. Road, Kolkata, 700 108, India

    Dilip Das & B. N. Mandal

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  1. Dilip Das
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  2. B. N. Mandal
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Correspondence to B. N. Mandal.

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Das, D., Mandal, B.N. Water wave radiation by a sphere submerged in water with an ice-cover. Arch Appl Mech 78, 649–661 (2008). https://doi.org/10.1007/s00419-007-0186-1

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