A modified discrete element model for sea ice dynamics

doi:10.1007/s13131-014-0428-3

IOCAS-IR > 海洋环流与波动重点实验室

	A modified discrete element model for sea ice dynamics
	Li Baohui 1,2,3,4,5; Li Hai 4,5; Liu Yu 4,5; Wang Anliang 6; Ji Shunying 6; Ji, SY (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China.
	2014
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	33 期号:1 页码:56-63
文章类型	Article
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.
关键词	Sea Ice Dynamics Modified Discrete Element Model Contact Force Model Numerical Simulation
学科领域	Oceanography
DOI	10.1007/s13131-014-0428-3
收录类别	SCI
语种	英语
WOS记录号	WOS:000330092300007
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/23901
专题	海洋环流与波动重点实验室
通讯作者	Ji, SY (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China.
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
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
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,&Ji, SY .(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.

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