Applicability of CFD Methods for Roll Damping Determination of Intact and Damaged Ship

This chapter presents an assessment of the roll damping of DTMB 5415 naval ship model in both intact and 2 compartments symmetric damaged scenarios. A numerical assessment of roll decay is performed by CDAdapco StarCCM+ software investigating the accuracy and efficiency of the numerical approach. The sensitivity analysis on mesh refinement is performed for damaged ship while time step and turbulence models sensitivity is investigated for the intact ship. Numerical results for decay curves, natural frequency and period of roll for intact and damaged ship are plotted against experiments, performed at the University of Strathclyde, Glasgow, to verify the precision of the numerical simulations. Obtained numerical results are shown to be reasonably accurate although the calculation time still precludes the use of Computational Fluid Dynamics (CFD) analysis as a standard design procedure.