As the global warming, the Arctic Shipping Routes are gradually opened. The icebreakers are still in need to ensure the safe navigation of ships. During the voyage from East Asia to North-western Europe, the icebreaker will experience a long-distance voyage where over 60% of the distance is open water. As the bow of the icebreaker is full and the length-beam ratio is relatively high, it is quite important to study added resistance of the icebreaker. The results of added resistance, heave and pitch motion in regular waves are consistent with the variation trend using two methods. For computational efficiency, the nonlinear potential method was used to predict added resistance and vertical movement of the icebreaker at five wind directions. The added resistance in head waves is higher than in other wave directions. The maximum value was obtained at the wave length-ship length ratio of 1.2. The relationship between the phase of motion and resistance can be easily obtained. Meanwhile, the free surface around the hull can also be easily obtained. Moreover, compared to the CFD method, the nonlinear potential method can save more computing resources and time. It has important application value in the early design of the icebreaker.

中文翻译：

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破冰船规则波浪附加阻力数值分析

随着全球变暖，北极航线逐渐开通。破冰船仍然需要确保船舶的安全航行。在从东亚到西北欧的航程中，破冰船将经历60%以上的距离为开阔水域的长途航行。由于破冰船船首已满，长梁比较高，因此研究破冰船的附加阻力具有重要意义。规则波浪中增加阻力、升沉和纵摇运动的结果与两种方法的变化趋势一致。为了计算效率，非线性势方法被用来预测破冰船在五个风向的附加阻力和垂直运动。头浪中的附加阻力高于其他波浪方向。最大值是在波长-船长比为 1.2 时获得的。很容易得到运动相位和阻力之间的关系。同时，船体周围的自由表面也可以很容易地获得。而且，与CFD方法相比，非线性势方法可以节省更多的计算资源和时间。在破冰船的早期设计中具有重要的应用价值。