A modified discrete element model for sea ice dynamics
文献类型：期刊论文
| 作者 | Li Baohui1,2,3,4,5; Li Hai4,5; Liu Yu4,5; Wang Anliang6; Ji Shunying6 |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2014 |
| 卷号 | 33期号:1页码:56-63 |
| 关键词 | sea ice dynamics modified discrete element model contact force model numerical simulation |
| 通讯作者 | Ji, SY (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China. |
| 英文摘要 | Considering the discontinuous characteristics of sea ice on various scales, a modified discrete element model (DEM) for sea ice dynamics is developed based on the granular material rheology. In this modified DEM, a soft sea ice particle element is introduced as a self-adjustive particle size function. Each ice particle can be treated as an assembly of ice floes, with its concentration and thickness changing to variable sizes under the conservation of mass. In this model, the contact forces among ice particles are calculated using a viscous-elastic-plastic model, while the maximum shear forces are described with the Mohr-Coulomb friction law. With this modified DEM, the ice flow dynamics is simulated under the drags of wind and current in a channel of various widths. The thicknesses, concentrations and velocities of ice particles are obtained, and then reasonable dynamic process is analyzed. The sea ice dynamic process is also simulated in a vortex wind field. Taking the influence of thermodynamics into account, this modified DEM will be improved in the future work. |
| 学科主题 | Oceanography |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000330092300007 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23901]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves KLOCAW, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.State Ocean Adm, Natl Marine Environm Forecast Ctr, Beijing 100081, Peoples R China 5.State Ocean Adm, Key Lab Res Marine Hazards Forecasting, Beijing 100081, Peoples R China 6.Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Baohui,Li Hai,Liu Yu,et al. A modified discrete element model for sea ice dynamics[J]. ACTA OCEANOLOGICA SINICA,2014,33(1):56-63. |
| APA | Li Baohui,Li Hai,Liu Yu,Wang Anliang,&Ji Shunying.(2014).A modified discrete element model for sea ice dynamics.ACTA OCEANOLOGICA SINICA,33(1),56-63. |
| MLA | Li Baohui,et al."A modified discrete element model for sea ice dynamics".ACTA OCEANOLOGICA SINICA 33.1(2014):56-63. |
入库方式： OAI收割
来源：海洋研究所
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