Publicações

Xiang, G. and Guedes Soares, C. (2020), “Modelling the Motion of a Dropped Cylinder under 3D Second-Order Regular Waves and Identification of the Governing Parameters”, Ships & Offshore Structures, Vol. 15, pp. 1084-1097

Nonlinear regular wave effects on the dropped cylinder are studied and compared with linear waves. A 3D second order wave model is employed to simulate the falling process of a dropped cylinder under nonlinear regular waves. The calculated results for nonlinear regular wave simulations, nonlinear regular wave effects on the trajectory, landing point and falling time of the dropped cylinder into different water depths, waves at zero and nonzero wave heading angle with different frequencies and amplitudes are compared with the corresponding results under linear regular waves. It is found that wave heading, wave frequency, water depth, wave amplitude, and the selection of regular wave model (linear or nonlinear) are factors that may significantly influence the motion of the dropped cylinder. The effects of nonlinear waves on the dropped cylinder are also affected by wave frequency, water depth, and wave amplitude. Especially the water depth to wave length ratio is found to be the dominant factor that may influence the effects of nonlinear regular waves on the dropped cylinder.

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