A 2D／3D COUPLED MODEL FOR WAVE FORCES ON MOORED SHIPS IN A HARBOR
摘要
For the purpose of time-domain calculation of wave forces on moored ships in a harbor,the 2D/3D coupled numerical model was developed,in which the horizontally 2D shallow-water wave model based on the improved Boussinesq equations was adopted for the calculation in the wide region located far from the ships while the 3D numerical model based on the Reynolds-Averaged Navier-Stokes(RANS)equations was used in the limited region adjacent to the ships.The domain connection technique with overlaping region between different model regions was applied and examined.It is shown that the present partially 3D hybrid model saves calculation time significantly compared to the full 3D model for the whole region and is capable of reproducing the characteristics of 3D and complicated flows around the ships and 3D hydrodynamic loads on them,which cannot be reproduced by the 2D model alone.