ABSTRACT
ABSTRACT: The so-called wave drift added mass and the wave drift damping are caused by the nonlinear interactions between the low-frequency oscillations of floating body and ambient waves. The problem of a circular cylinder (or array) slowly oscillating in diffraction wave field is considered in the present work. The frequency of the slow oscillation is assumed to be much smaller than the wave frequency. Perturbation expansion based on two time scales and two parameters is performed to simplify the problem. The approach to solve the boundary value problem is described. The far field conditions are suggested to ensure the existence of the unique solution. Experimental measurements are carried out to compare the calculated results.
