When the ice-going ships advance in the polar region, the navigation in the floe ice region is often encountered, the hull will suffer the high-frequency contact force produced by the floe ice, which will affect the navigation performance of the ship. Therefore, it is necessary to predict the water and ice force acting on the hull accurately. In this paper, the numerical simulation and experimental verification will be conducted for the polar scientific research ship-“Xue Long”. Based on the computational fluid dynamics (CFD) and DEM theory, a virtual mass method is proposed to realize the predicting of the water and ice force and the simulation of the interaction phenomenon between the ice and hull, the numerical method is built to calculate the force acting on the hull. At the same time, the synthetic ice is used to carry out the experimental research on the advancing straight with different speeds and the oblique navigation with different drift angles. The optimal virtual mass coefficient is determined through the comparison and analysis of the numerical simulation and test results under typical condition. According to the optimal virtual mass coefficient, the numerical simulation is carried out with different speeds and drift angles, which is compared with the experiment more deeply. It is found that the virtual mass method based on the combination of CFD and DEM can simulate the overturning and the sliding along the hull of the floe ice vividly, the relative error of the total resistance between model test and numerical method in advancing straight is almost within 10%, while the relative error of the total longitudinal force in oblique navigation is almost within 15%.

当制冰船在极地区域前进时，通常会遇到浮冰区域的航行，船体将承受浮冰产生的高频接触力，这将影响船舶的航行性能。因此，有必要准确地预测作用在船体上的水和冰的力。本文将对极地科研船“学龙”进行数值模拟和实验验证。基于计算流体动力学（CFD）和DEM理论，提出了一种虚拟质量方法来实现对水和冰力的预测以及对冰与船体之间相互作用现象的仿真，并建立了数值方法来计算作用在船体上的力。同时，利用合成冰进行了不同速度直行和不同漂移角斜向航行的实验研究。通过比较和分析典型条件下的数值模拟和试验结果，确定最佳虚拟质量系数。根据最佳的虚拟质量系数，以不同的速度和漂移角进行了数值模拟，并与实验进行了比较。结果表明，基于CFD和DEM的虚拟质量法可以生动地模拟浮冰的倾覆和沿船体的滑动，模型试验与数值方法在直线前进中的总阻力相对误差几乎为在10％以内