Finite Depth and Tank Wall Effects Upon First and Second-Order Forces

Abstract

This paper presents a hybrid method of solution of the radiation and diffraction fluid-structure interaction problems based upon Rankine source distributions and eigenfunction expansion matching techniques. Using direct pressure integration of the first-order solutions, the second-order drift forces are calculated in “open” water and “confined” water situations with and without forward speed effects included. The method has been developed to provide an alternative way of calculating low-frequency damping coefficients.