Abstract

The radiation problem for a deep submerged cylinder is analysed and an asymptotic expression, uniformly valid in the whole range of frequencies, is derived for the radiation damping and exciting force. The obtained expression is a natural extension of the inertia term in the well known Morison's formula and may be useful in the analysis of certain ocean structures such as a tension leg platform, for example. In particular it makes it possible to define a geometry tuned to have null excitation at some desired frequency.

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