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The influence of nonlinearities on the symmetric hydrodynamic response of a 10,000 TEU container ship

Hirdaris, S.E. and Lee, Y. and Mortola, G. and Incecik, A. and Turan, O. and Hong, S.Y. and Kim, B.W. and Kim, K.H. and Bennett, S. and Miao, S.H. and Temarel, P. (2016) The influence of nonlinearities on the symmetric hydrodynamic response of a 10,000 TEU container ship. Ocean Engineering, 111. 166–178. ISSN 0029-8018

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Abstract

The prediction of wave-induced motions and loads is of great importance for the design of marine structures. Linear potential flow hydrodynamic models are already used in different parts of the ship design development and appraisal process. However, the industry demands for design innovation and the possibilities offered by modern technology imply the need to also understand the modelling assumptions and associated influences of nonlinear hydrodynamic actions on ship response. At first instance, this paper presents the taxonomy of different Fluid Structure Interaction (FSI) methods that may be used for the assessment of ship motions and loads. Consequently, it documents in a practical way the effects of weakly nonlinear hydrodynamics on the symmetric wave-induced responses for a 10,000TEU Container ship. It is shown that the weakly nonlinear FSI models may be useful for the prediction of symmetric wave-induced loads and responses of such ship not only in way of amidships but also at the extremities of the hull. It is concluded that validation of hydrodynamic radiation and diffraction forces and their respective influence on ship response should be especially considered for those cases where the variations of the hull wetted surface in time may be noticeable.