The hydrodynamic interaction between ships or between the ship and the bank was studied by numerical methods. A number of new numerical results were obtained, for both ship–ship interaction and ship–bank interaction cases, by applying the double-body potential flow code HYDINTER earlier developed at Instituto Superior Técnico (University of Lisbon, Portugal). A comparative numerical study was made between these results and those obtained earlier for the same ship forms at Ghent University (Belgium) with a different potential code (ROPES), with a Computational Fluid Dynamics (CFD) code (ISIS-CFD) and with Experimental Fluid Dynamics (EFD) data obtained in the shallow water towing tank at Flanders Hydraulics Research, Belgium.

A panel method is – in comparison with CFD – relatively fast and can often be used in real-time simulations. Because of this substantial benefit, the research focuses on identifying the limitations of applicability of this alternative computation method which neglects viscous effects and free-surface deformation. In this research, on the one hand good predictions are obtained for ship–ship interaction between encountering ships. On the other hand, the results for ship–bank interactions fail to predict the experimental trends. The errors increase at very close distances to the bank or another ship. The same holds true for the cases characterised by very large drift angles e.g. a tug crabbing near a large vessel.

通过数值方法研究了船舶之间或船舶与河岸之间的水动力相互作用。通过应用早先在葡萄牙特里尼科大学（Instituto SuperiorTécnico）（葡萄牙里斯本大学）开发的双体潜在流代码HYDINTER，获得了船舰相互作用和船岸相互作用情况的许多新数值结果。在这些结果与早先在比利时根特大学以相同的船型使用不同的潜在代码（ROPES），计算流体动力学（CFD）代码（ISIS-CFD）和实验获得的结果之间进行了比较数值研究。在比利时法兰德斯液压研究公司的浅水拖曳舱中获得的流体动力学（EFD）数据。

与CFD相比，面板方法相对较快，通常可以用于实时仿真中。由于具有这种实质性的好处，因此研究的重点是确定这种替代计算方法的适用性限制，该方法忽略了粘滞效应和自由表面变形。在这项研究中，一方面，对于遇到的船舶之间的船舰相互作用，获得了很好的预测。另一方面，船岸相互作用的结果不能预测实验趋势。与岸边或另一艘船的距离非常近，误差会增加。对于以非常大的漂移角为特征的情况，例如在大型船只附近的拖船抓捕，情况也是如此。