| 海冰离散元模型的研究回顾及展望 |
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| 引用本文： | 季顺迎,李春花,刘煜.海冰离散元模型的研究回顾及展望[J].极地研究,2012,24(4):315-330. |
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| 作者姓名： | 季顺迎 李春花 刘煜 |
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| 作者单位： | 1.大连理工大学工业装备结构分析国家重点实验室，辽宁 大连 116023；
;2.国家海洋环境预报研究中心，国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081 |
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| 基金项目： | 国家海洋公益性行业科研专项经费项目(2012418007,201105016);国家自然科学基金项目(41176012);中央高校基本科研业务费专项(DUT12YQ02);国家海洋局极地考察办公室对外合作支持项目(IC201211)资助 |
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| 摘 要： | 为描述极区及副极区海冰在不同尺度下的离散分布特性，以及海冰与海洋结构相互作用过程中的破碎性能，海冰的离散单元模型从上世纪80年代发展起来并不断完善。本文将海冰离散单元模型分为地球物理尺度( ~100km)、浮冰块尺度(10m ~ 10km)和海洋结构尺度(1m ~ 100m)等三种不同尺度，讨论了不同尺度下海冰的离散分布规律或海冰由连续状态向离散状态转化的动力过程。通过对块体、圆盘和颗粒不同形态的海冰离散单元模型的介绍，对其在极区海冰的动力特性、海冰重叠堆积及其与波浪的作用过程、海冰与海洋结构的相互作用中的应用进行了分析，对海冰强度的尺度效应进行了讨论。最后，讨论了海冰离散单元模型中存在的问题和重点研究内容。
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| 关 键 词： | 海冰 离散单元模型 尺度效应 |
| 收稿时间： | 2012-04-06 |
AREVIEW OFADVANCESIN SEA-ICEDISCRETEELEMENT MODELS |
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| Ji Shunying,Li Chunhua,Liu Yu.AREVIEW OFADVANCESIN SEA-ICEDISCRETEELEMENT MODELS[J].Chinese Journal of Polar Research,2012,24(4):315-330. |
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| Authors: | Ji Shunying Li Chunhua Liu Yu |
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| Institution: | 1State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116023,China; 2Key Laboratory of Research on Marine Hazards Forecasting,National Marine Environment Forecasting Center,Beijing 100081,China) |
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| Abstract: | In order to describe the discrete nature of sea ice at different scales, sea ice discrete element models have been developed since 1980s. In this study, three scales of sea ice are divided as geophysical scale (~100km), floe scale (~10km) and structure scale (1m~100m). On each scale, the discrete distribution and dynamic process from continuous to discrete state of sea ice are presented. Sea ice discrete element models in terms of blocks, disks and particles are introduced, and their application in dynamic characteristics of sea ice in polar regions, simulation of sea ice rafting and ridging and the interaction with wave, interaction between sea ice and structures, and sea ice mechanical properties modeling are analyzed. Sea ice strength due to scale effect is discussed. Finally, future studies on sea ice discrete element models are suggested. |
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| Keywords: | sea ice discrete element models scale effect |
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