Time Domain Calculations of the Second-Order Drift Force on a Floating Three-Dimensional Object in Current and Waves

摘要

In the paper the authors solve the time-dependent linear equations describing theinteraction between a three-dimensional floating body and current and waves. The algorithm is based upon combining the time-dependence boundary conditions and the Laplace equation, and integrating the resulting equation in time. The algorithm is stable for every time-step and velocity of the ship. Results are presented for the hydrodynamic coefficients and drift forces. The hydrodynamic coefficients agree well with results found after transforming the equations into the freuqency domain. The drift forces have not been shown in literature before.