2D numerical modeling of icebreaker advancing in ice-covered water
2D numerical modeling of icebreaker advancing in ice-covered water
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DOI：
10.1016/j.ijnaoe.2018.02.005
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发表时间：
2018-05
影响因子：
2.2
通讯作者：
J. Sawamura
中科院分区：
文献类型：
--
作者：
J. Sawamura
本文提出了二维数值模拟计算船冰相互作用时发生的破冰船前进到冰封的水。数值模型计算了冰板的反复破冰和小浮冰的清除。冰板的破冰计算采用船冰接触检测技术和流固耦合的冰板弯曲行为。采用基于物理模型的三自由度刚体方程计算了小浮冰中的船冰相互作用。冰板以破碎、弯曲和分裂模式破碎。浮冰在风或水流以及船冰相互作用所产生的力的作用下漂移。数值模拟了破冰船驶入覆冰水域时的冰力时间历程和浮冰分布。数值结果表明，冰力的时间历程和浮冰的分布（冰槽宽度）取决于浮冰的大小、船舶的运动以及风或流作用下的浮冰漂流。结果表明，船舶在实际冰况下操纵的数值模型是必要的，以获得精确的信息，船舶在冰封的水域。该数值模型可用于提供船舶在结冰水域中的航行数据。
This paper presents 2D numerical modeling to calculate ship–ice interactions that occur when an icebreaker advances into ice-covered water. The numerical model calculates repeated icebreaking of an ice plate and removal of small ice floes. The icebreaking of the ice plate is calculated using a ship–ice contact detection technique and fluid–structural interaction of ice plate bending behavior. The ship–ice interactions in small ice floes are calculated using a physically based modeling with 3DOF rigid body equations. The ice plate is broken in crushing, bending, and splitting mode. The ice floes drift by wind or current and by the force induced by the ship–ice interaction. The time history of ice force and ice floe distribution when an icebreaker advances into the ice-covered water are obtained numerically. Numerical results demonstrate that the time history of ice force and distribution of ice floes (ice channel width) depend on the ice floe size, ship motion and ice drifting by wind or current. It is shown that the numerical model of ship maneuvering in realistic ice conditions is necessary to obtain precise information about the ship in ice-covered water. The proposed numerical model can be useful to provide data of a ship operating in ice-covered water.