Numerical Simulation of Hydrodynamic Interaction Produced during the Head-on Encounter Process of Two Ships

摘要

The phenomenon of asymmetric flows appear between shipsand ship-shores, it causes bows and quays to attract one another,and sterns and quays to dispel one another. This bank effect isan important aspect of ship manoeuvring and thus should befurther explored. Based on past studies on the bank effect (Lo etal., Journal of Navigation 2009, 62, 477-491), this study usedcommercial Flow-3D to simulate the head-on phenomenon oftwo ships. The hydrodynamic principles were used to simulatethe hydrodynamic interaction effect of the head-on situationbetween two ships of different speeds. The conditions forsimulation include such parameters as the speed of the shipmodel, the distance between the ships, and the navigation time.A chart is also used to demonstrate the two ships’ tracks, thedistribution of flow field, the changes in the motion of the centerof mass, and to continually compare the changes in the swayforce and the yaw moment. A relationship diagram of the headonencounter process is also established to serve as a referencein maritime science and yield a useful set of guidelines whenships are merged with the sea.