极地研究（英文版）2008，Vol.19Issue(2)：237-248,12.
Mechanical and numerical models for sea ice dynamics on small-meso scale
Mechanical and numerical models for sea ice dynamics on small-meso scale
摘要
Abstract
On small-meso scale, the sea ice dynamic characteristics are quite different from that on large scale. To model the sea ice dynamics on small-meso scale, a new elastic-viscous-plastic (EVP) constitutive model and a hybrid Lagrangian- Eulerian (HLE) numerical method are developed based on continuum theory. While a modified discrete element model (DEM) is introduced to model the ice cover at discrete state. With the EVP constitutive model, the numerical simulation for ice ridging in an idealized rectangular basin is carried out and the results are comparable with the analytical solution of jam theory. Adopting the HLE numerical model, the sea ice dynamic process is simulated in a vortex wind field. The furthering application of DEM is discussed in details for modeling the discrete distribution of sea ice. With this study, the mechanical and numerical models for sea ice dynamics can be improved with high precision and computational efficiency.关键词
sea ice dynamics/constitutive model/numerical method/discrete element model/small-meso scaleKey words
sea ice dynamics/constitutive model/numerical method/discrete element model/small-meso scale引用本文复制引用
JI Shun-ying,WANG An-liang,LI Hai,YUE Qian-jin..Mechanical and numerical models for sea ice dynamics on small-meso scale[J].极地研究（英文版）,2008,19(2):237-248,12.基金项目
The helpful discussions with Profs. Hung Tao Shen and Hauyley H Shen from Clarkson University of USA are appreciated. The study is supported by the Na-tional Natural Science Foundation of China (Grant No.40206004) and partly by the open foundation of Key Laboratory of Polar Science of Science of the State Oceanic Administra-tion,China(Grant No.KP2007004). （Grant No.40206004）
