Hydrodynamic Forces Acting on a Ship Hull under Lateral Low Speed Motion

船舶靠泊操纵通常是在横向运动速度较低、距离泊位较近的情况下进行的。船舶靠泊操纵过程中船体所受的水动力具有复杂的过渡性，本文采用CFD技术来研究船舶靠泊操纵过程中的过渡流现象。通过时域计算与高精度实验的对比，验证了CFD方法的可行性和有效性，并得到了浅水区的计算结果，转捩效应较大，且可以长时间观察到。这些结果被用来模拟过渡水动力。还进行了无粘体计算以获得附加质量。提出了船舶主尺度和水深的简化计算公式。

The berthing maneuver of ships is usually carried out in the low lateral moving speed and in the short distance to a berth. Hydrodynamic forces acting on the ship hull under the berthing maneuver have quite complex and transitional characteristics.In this research, the CFD technique has been used to understand the transitional fluid phenomena. By comparing the time-domain computation and the very precise experiment, the feasibility and validation of CFD was demonstrated.The results for the shallow water were also obtained and the transitional effect is large and observed in the long time. These results were used to model the transitional hydrodynamic force. The invisid computations were also done to get the added mass. The simplified formula for the ship principal dimensions and water depth was proposed.