Authors: A. Ramos, C. J. Fortes, L. V. Pinheiro

In this paper, are described the physical model tests conducted in order to characterize the sea wave propagation around a floating ship, when subjected to regular and irregular waves conditions. These data are particularly important for the validation of numerical models to characterize the ships response, when subjected to the action of different wave conditions. So, for each different wave condition, the elevation of the free surface was measured, along with the velocity components at various points around the ship. Are presented the following analysis of the experimental data: wave-by-wave and spectral (energy spectrum and wavelets) analysis of the elevation of the free surface and wave-by-wave analysis of the velocity components. The wave-by-wave and spectral analysis of each series of measurements allows the characterization of the sea wave propagation in several points around the ship (heights, periods and velocities). The influence of the presence of the ship in the sea waves propagation is also evaluated.

A. Ramos¹ | C. J. Fortes² | L. V. Pinheiro³
1Bolseiro de Experimentação, NPE/DHA-LNEC, Lisboa – Portugal.
2Investigadora Principal, NPE/DHA-LNEC, Lisboa – Portugal.
3Bolseira de Pós-Doutoramento, NPE/DHA-LNEC, Lisboa – Portugal.