Numerical Simulation of the Effect of Ship Bulbous on Hydrodynamic Parameters

Bulbous bow optimization for ship is one of the ways to increase the efficiency of the ship through its hydrodynamic performance. In this study, with the aim of STAR-CCM +, the effects of changes in bulbous bow length for the KCS ship on hydrodynamic behaviour investigated. For this purpose, the leng3th of the bulbous bow was reduced by 5%, and increase 5%, 15% and 25% compared to the baseline, and then simulations were performed on three Froude numbers of 0.22, 0.26 and 0.30. Their results of the simulations show that with reducing the bulbous bow length by 5%, the total resistance in the three Froud number increased, respectively, but increased the bulbous bow length the total resistance reduced. Also, with increasing Froude number, the effect of the bulbous bow length will be more influence in reducing the total resistance.