冰区航行船舶螺旋桨会与碎冰发生碰撞，产生的冰载荷对螺旋桨的危害较大。本文模拟冰锥与刚体碰撞试验以验证计算方法的可行性，基于ALE算法的流固耦合分析方法对不同冰层厚度、密集度以及螺旋桨进速的冰桨碰撞进行研究。研究发现，冰载荷与冰厚基本呈正相关性，冰厚大于0.75 m时，冰载荷成连续分布且最大值增长迅速。冰载荷平均值与冰区密集度呈递增关系，最大值与密集度不呈递增关系，当密集度大于7/10时，冰载荷影响剧烈。螺旋桨进速越大，冰载荷越大，进速大于1.5 m/s时，冰载荷增长迅速。通过冰桨数值模拟分析，为实际船舶螺旋桨在碎冰区航行提供参考。
The propeller of ships sailing in ice area will collide with broken ice, and the ice load will do great harm to the propeller. In this paper, the ice cone and rigid body collision test is simulated to verify the feasibility of the calculation method. The ice propeller collision with different ice thickness, density and propeller speed is studied by the fluid structure coupling analysis method based on ALE algorithm. It is found that there is a positive correlation between ice load and ice thickness. When the ice thickness is greater than 0.75 m, the ice load is continuously distributed and the maximum value increases rapidly. The average value of ice load increases with the density of ice area, and the maximum value does not increase with the density. When the density is greater than 7/10, the influence of ice load is severe. The larger the propeller advance speed, the greater the ice load. When the advance speed is greater than 1.5m/s, the ice load increases rapidly. Through the numerical simulation analysis of ice propeller, it provides a reference for the actual ship propeller sailing in ice breaking area.
2023,45(8): 15-19 收稿日期：2021-08-31
DOI：10.3404/j.issn.1672-7649.2023.08.004
分类号：U661.1
基金项目：国家自然科学基金资助项目（51809124）
作者简介：陈萍(1997-),女,硕士研究生,研究方向为船舶性能预报
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