Simulation strategy of the full-scale ship resistance and propulsion performance

The ship powering performance can be predicted based on model tests or simulations. However, differences exist between the full-scale and extrapolated data. Therefore, research simulation has important scientific significance engineering value. This study used REGAL general cargo vessel to perform resistance self-propulsion simulations for various grid numbers, time step sizes, wall Y+ values compared calculation empirical results. components, waveform, Courant–Friedrichs Lewy (CFL) number, pressure field, wake flow field of conditions were analysed. value was observed affect capture boundary layer flow, evolution, which subsequently resistance. A within 200 considered appropriate when simulating a ship. waveform evolution significantly affected by size, should meet requirement that CFL number free surface is less than 1. When sliding mesh, interface also Additionally, obtain correct propeller excitation force, it recommended size maintained below 1°/step (0.000076 LPP/v).