Modified PIC Method for Sea Ice Dynamics

王瑞学; 季顺迎; SHEN Hung tao; 岳前进

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Modified PIC Method for Sea Ice Dynamics

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摘要

The sea ice cover displays various dynamical characteristics such as breakup, rafting, and ridging under external forces. To model the ice dynamic process accurately, the effective numerical modeling method should be established. In this paper, a modified particle-in-cell (PIC) method for sea ice dynamics is developed coupling the finite difference (FD) method and smoothed particle hydrodynamics (SPH). In this method, the ice cover is first discretized into a series of Lagrangian ice particles which have their own sizes, thicknesses, concentrations and velocities. The ice thickness and concentration at Eulerian grid positions are obtained by interpolation with the Gaussian function from their surrounding ice particles. The momentum of ice cover is solved with FD approach to obtain the Eulerian cell velocity, which is used to estimate the ice particle velocity with the Gaussian function also. The thickness and concentration of ice particles are adjusted with particle mass density and smooth length, which are adjusted with the redistribution of ice particles. With the above modified PIC method, numerical simulations for ice motion in an idealized rectangular basin and the ice dynamics in the Bohai Sea are carried out. These simulations show that this modified PIC method is applicable to sea ice dynamics simulation.

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来源
《中国海洋工程：英文版》 |2005年第3期|457-468|共12页
作者
王瑞学; 季顺迎; SHEN Hung tao; 岳前进;
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作者单位

State Key Laboratory of Structural Analysis for Industrial Equipment;

Dalian University of Technology;

Dalian 116023;

China;

State Key Laboratory of Structural Analysis for Industrial Equipment;

Dalian University of Technology;

Dalian 116023;

China;

Department of Civil and Environmental Engineering;

Clarkson University;

Potsdam;

NY 13699;

USA;

Department of Civil and Environmental Engineering;

Clarkson University;

Potsdam;

NY 13699;

USA;

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原文格式 PDF
正文语种 chi
中图分类海冰;
关键词
海冰; 动力学分析; PIC; 数值模拟; FD;

机译：粒子内;平滑粒子流体动力学;海冰动力学;数值模拟;

Modified PIC Method for Sea Ice Dynamics

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