Numerical Prediction of the Effects of Separation Distances of Slender and Symmetrical Hulls of Pentamarans on the Wave-Making Resistance

Pentamaran models with slender and symmetrical hull forms have been investigated with varying separation distances, in an effort to minimize the wave-making resistance. This research aims to determine the wave-making resistance of the pentamaran with a computational fluid dynamics approach using the Reynolds-averaged Navier–Stokes (RANS) equation with the k-ω SST turbulence model. The S/L ratios of 0.2, 0.3, and 0.4 represent the separation distance. The pentamaran configuration with the parallel tandem formation with a S/L ratio of 0.4 (Penta-C) results in the smallest wave-making resistance coefficient of 2.475 × 10–3 at Fr 0.6. Overall, the pentamaran configuration with the parallel tandem formation (Penta-A, B, and C) provides a reasonably good ship resistance prediction compared to the arrow formation (Penta-D and E).