LAUSR

ABSTRACT Nonlinear regular wave effects on a dropped cylinder are studied and compared with those of 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 angles with different frequencies and amplitudes are compared with the corresponding results under linear regular wave simulations. 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.