A Consideration on the Effect of Viscous Damping upon the Drifting Force for Two-Dimensional Body

Abstract

The effect of viscosity on the drifting force for two-dimensional floating body oscillating on the regular beam waves is discussed mainly in this paper. Firstly, the drifting force acting on the eight cylinders of Lewis Form section heaving, swaying and rolling among the beam waves is calculated according to Maruo's theory and by using linearized wave theory. Secondly, by taking the linearized viscous damping force into consideration, an expression for the drifting force is presented and the results of the numerical calculation for the cylinders mentioned above are shown and examined.