Numerical study on roll damping of ship by solving incompressible N-S equations

Two-dimensional unsteady incompressible viscous flow around a rolling cylinder with ship-like section is numerically simulated by employing the computational scheme previously developed by the authors, in which the continuity and momentum equations are satisfied simultaneously at each time step for oscillating flows. The numerical results show that the motion of vortices around rolling ship hull is cyclical. It is found that the location of the vortices is very similar existing experimental result. Using this simulated results, the roll damping of ships including viscous effects are calculated.