Benchmark Computations on Motion Responses and Bow Waves of the Ship in Regular Waves

摘要

The bow wave depending on the bow shape can be determined byrelatively simple geometric parameters due to little influence of thedownstream wave. Accurate prediction of the bow wave is essential forship resistance and motion responses. In this paper, the benchmark shipmodel, the Blunt modified Wigley, is used for all the simulations. Thebow wave generated by the Blunt modified Wigley hull at a constantspeed in incident waves is considered. The bow wave and the shiphydrodynamics are investigated by using Reynolds-averaged Navier-Stokes (RANS) method with Volume of Fluid (VOF) method to capturethe free surface. In-house computational fluid dynamics solver, naoe-FOAM-SJTU, is applied to predict the hydrodynamics. The addedresistance and motion responses of the Blunt modified Wigley in incidentwaves are studied to help understand the effect of the wave length onmotion responses. The 1st harmonic amplitude and corresponding phasefor heave and pitch motions are analyzed in detail. Furthermore, the wavepatterns are visualized to discuss the evolution of the bow wave.