A modified discrete element model for sea ice dynamics
文献类型：CNKI期刊论文
| 作者 | LI Baohui; LI Hai; LIU Yu; WANG Anliang; JI Shunying |
| 发表日期 | 2014-01-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | sea ice dynamics modified discrete element model contact force model numerical simulation |
| 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Special Fund of Marine Commonweal Industry under contact Nos 201105016 and 201205007 ; supported by National Marine Environment Forecasting Centre ; the National Natural Science Foundation of China under contact No.41176012 |
| 卷 | v.33期:01页:58-65 |
| 语种 | 中文; |
| 分类号 | P731.15 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190580]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofResearchonMarineHazardsForecasting,StateOceanicAdministration 2.InstituteofOceanology,ChineseAcademyofSciences 3.KeyLaboratoryofOceanCirculationandWaves(KLOCAW),ChineseAcademyofSciences 4.GraduateSchoolofChineseAcademyofSciences 5.NationalMarineEnvironmentForecastCenter,StateOceanicAdministration 6.StateKeyLaboratoryofStructuralAnalysisforIndustrialEquipment,DalianUniversityofTechnology |
| 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. 2014. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。