为准确模拟船舶在碎冰航道中航行时船-冰相互作用现象及评估船体所受碎冰阻力大小，以拉格朗日-欧拉法为基础，采用离散元方法对某天然液化气加注船在碎冰航道内航行的冰阻力开展数值模拟方法研究，并通过数值模拟结果与冰池船模试验结果对比评估数值模拟方法的可行性与可靠性。结果表明，本文提出的数值模拟方法可以描绘出航道内碎冰粒子与船体相互作用时的运动状态，且阻力计算精度在5%以内，满足工程应用的要求，可直接应用于相似碎冰区航行船的冰阻力计算及冰区船线型的优化设计工作。
In order to simulate the interaction between ship and ice for an ice going ship navigating in brash ice channel accurately, based on the Lagrange-Euler method, Discrete element method (DEM) was adopted to simulate the ice resistance of a liquid natural gas (LNG) bunker ship navigating in brash ice channel. Except for that, the availability and reliability of this numerical method were evaluated by comparing the results of numerical simulation with ice model tests. The results show that the numerical simulation method proposed in this paper could show the interaction between ice floes and ship, and the computational error is within 5%, which could satisfy the requirement of engineering application and it could be applied to ice resistance calculation and optimization of similar ice-going ship directly.
2024,46(14): 43-50 收稿日期：2023-08-20
DOI：10.3404/j.issn.1672-7649.2024.14.008
分类号：U662.2
基金项目：2020年上海市领军人才资助项目（047）
作者简介：于晨芳(1990-),女,硕士,工程师,研究方向为船舶线型研发与CFD高精度计算
参考文献：
[1] SORSIMO A, NYMAN T, HEINONEN J. Ship-ice interaction in a channel[R]. The VTT Technical Research Centre of Finland, VTT-R-05953-14, Finland: Primo Cent, 2016: 4–16.
[2] SEO D C, ROBERT P. A numerical study of interaction between ice particles and complex ship structures[C]// Offshore Technology Conference, 2016.
[3] 骆婉珍, 姜大鹏, 吴铁成, 等. 冰区加强型散货船碎冰航道航行阻力数值计算研究[J]. 中国造船, 2020, 61(1): 41-49.
LUO Wanzhen, JIANG Dapeng, WU Tiecheng, et al. Numerical study on resistance of ice-strengthening bulk carrier in crushed ice channel[J]. Shipbuilding of China, 2020, 61(1): 41-49.
[4] 国威, 赵桥生, 王习健, 等. 碎冰条件下冰区船冰水动力数值模拟研究[J]. 船舶力学, 2020, 24(4): 456-464.
GUO Wei, ZHAO Qiaosheng, WANG Xijian, et al. The numerical simulation research on ice and water combined force acting on ice-going ship in pack ice[J]. Journal of Ship Mechanics, 2020, 24(4): 456-464.
[5] 金强, 张佳宁, 葛媛, 等. 基于离散元方法的极地浮碎冰区船舶冰阻力[J]. 船舶工程, 2020, 42(1): 35-41.
JIN Qiang, ZHANG Jianing, GE Yuan, et al. Ship ice resistance in polar brash/broken ice area based on discrete element method[J]. Ship Engineering, 2020, 42(1): 35-41.
[6] 齐江辉, 郭祥, 陈强, 等. 碎冰区航行船舶阻力预报数值模拟研究[J]. 兵器装备工程学报, 2019, 40(11): 207-212.
QI Jianghui, GUO Xiang, CHEN Qiang, et al. A numerical simulation research for resistance prediction of ship in crushed ice area[J]. Journal of Ordnance Equipment Engineering, 2019, 40(11): 207-212.
[7] ZONG Z, YANG B, SUN Z, et al. Experimental study of ship resistance in artificial ice floes[J]. Cold Region Science and Technology, 2020, 176, 103102.
