Estimation of the responses of axisymmetric bodies in spread irregular waves

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  2. Dr Nick Baker
Author(s) Baker NJ; McCabe AP; Stallard TJ; Yavuz H
Publication type Article
JournalOcean Engineering
ISSN (print)0029-8018
ISSN (electronic)1873-5258
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A method is presented of estimating the responses of axisymmetric bodies floating in spread irregular seas, using a Laplace transfer-function formulation of a floating body time-domain model. A general-case spread-wave model is formulated, using separate wave excitation transfer functions, and a simplification of this approach is proposed, reducing both model complexity and computation time. Responses are computed using both approaches and a comparison made to assess the circumstances in which the simplified approach may be used effectively. The results are also interpreted to highlight the implications of using an equivalent unidirectional wave as an approximation to a spread wave.
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