Numerical Investigation of Length to Beam Ratio Effects on Ship Resistance Using Ranse Method

Abstract

The paper discusses the length to beam (L/B) ratio effects on ship resistance at three different Froude numbers using unsteady RANSE simulation. First, the JBC ship model was used as an initial hull form for verification and validation of predicted ship resistance results with measured data, and then the influence of the L/B ratio on ship resistance was carried out. Ship hull forms with different L/B ratios were produced from the initial one by using the Lackenby method. The numerical results obtained show the L/B ratio’s effect on ship resistance. Increases of the L/B ratio led to gradual reduction of the total ship resistance and vice versa. Analysis of the changing of the resistance components indicates that the pressure resistance changes are considerably larger than the frictional one. Finally, the paper analyses the difference in the flow field around the hull of the ship with variation of the L/B ratio to fully understand the physical phenomenon in the change of ship resistance at different L/B parameters.

Numerical Simulation Flow Around the Containership by using CFD Method

“…A more favorable alternative, the CFD method can provide relatively accurate results and furnish more intricate details of the flow around the ship hull with a shorter time and at a lower cost compared to the experimental method [1]. Consequently, the CFD method has been universally adopted for investigating the ship resistance and flow around the hull [2][3][4][5][6][7][8][9][10][11][12][13].…”