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Publications
Paço, A., Fonseca, N. and Guedes Soares, C. (2012), “Wave frequency dynamics of a tanker moored inside the port”, Maritime Engineering and Technology, Guedes Soares et al. (Eds),Taylor & Francis Group, London, pp. 213-221
The paper presents an analysis of the wave frequency induced motions of a tanker moored in several restrained conditions that resemble the conditions inside the port. One of the objectives is to investigate the influence of several parameters on the horizontal and vertical motions, including: the water depth, presence and distance of a vertical wall, influence of dolphins and the effects of the mooring lines. The second objective is to assess the ability of the existing numerical method to predict the ship dynamics in close proximity to several boundaries and including the mooring line effects. The calculations are carried out in the frequency domain with a three dimensional Grenn’s function panel method. The mooring line forces are firstly calculated exactly as function of the ship displacements and then linearized around the equilibrium point to obtain the stiffness matrix. The later is added to the hydrostatic stiffness matrix. Finally, numerical predictions are compared with experimental data obtained with a scaled model on a wave tank in regular and irregular wave.
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