| A hybrid Lagrangian-Eulerian numerical model for sea-ice dynamics |
| |
| 作者姓名： | JI Shunying LI Hai SHEN Hung Tao WANG Ruixue YUE Qianjin |
| |
| 作者单位： | JI Shunying1，LI Hai2，SHEN Hung Tao3，WANG Ruixue1，3，YUE Qianjin11.State Key Laboratory of Structural Analysis for Industrial Equipment，Dalian University of Technology，Dalian 116024，China 2.National Marine Environment Forecast Center，Beijing 100081，China 3.Department of Civil and Environmental Engineering，Clarkson University，New York 13699-5710，USA |
| |
| 基金项目： | 国家自然科学基金
,
国家海洋局青年海洋科学基金 |
| |
| 摘 要： | A hybrid Lagrangian-Eulerian(HLE) method is developed for sea ice dynamics,which combines the high computational efficiency of finite difference method(FDM) with the high numerical accuracy of smoothed particle hydrodynamics(SPH).In this HLE model,the sea ice cover is represented by a group of Lagrangian ice particles with their own thicknesses and concentrations.These ice variables are interpolated to the Eularian gird nodes using the Gaussian interpolation function.The FDM is used to determine the ice velocities at Eulerian grid nodes,and the velocities of Lagrangian ice particles are interpolated from these grid velocities with the Gaussian function also.The thicknesses and concentrations of ice particles are determined based on their new locations.With the HLE numerical model,the ice ridging process in a rectangular basin is simulated,and the simulated results are validated with the analytical solution.This method is also applied to the simulation of sea ice dynamics in a vortex wind field.At last,this HLE model is applied to the Bohai Sea,and the simulated concentration,thickness and velocity match the satellite images and the field observed data well.
|
| 关 键 词： | 杂交拉格朗日 欧拉模型 海洋 冰层动力学 |
| 收稿时间： | 2006/8/18 0:00:00 |
| 修稿时间： | 2006-08-18 |
A hybrid Lagrangian-Eulerian numerical model for sea-ice dynamics |
| |
| JI Shunying,LI Hai,SHEN Hung Tao,WANG Ruixue,YUE Qianjin.A hybrid Lagrangian-Eulerian numerical model for sea-ice dynamics[J].Acta Oceanologica Sinica,2007,26(5):12-24. |
| |
| Authors: | JI Shunying LI Hai SHEN Hung Tao WANG Ruixue and YUE Qianjin |
| |
| Institution: | State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;National Marine Environment Forecast Center, Beijing 100081, China;Department of Civil and Environmental Engineering, Clarkson University, New York 13699-5710, USA;State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;Department of Civil and Environmental Engineering, Clarkson University, New York 13699-5710, USA;State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China |
| |
| Abstract: | A hybrid Lagrangian-Eulerian(HLE) method is developed for sea ice dynamics,which combines the high computational efficiency of finite difference method(FDM) with the high numerical accuracy of smoothed particle hydrodynamics(SPH).In this HLE model,the sea ice cover is represented by a group of Lagrangian ice particles with their own thicknesses and concentrations.These ice variables are interpolated to the Eularian gird nodes using the Gaussian interpolation function.The FDM is used to determine the ice velocities at Eulerian grid nodes,and the velocities of Lagrangian ice particles are interpolated from these grid velocities with the Gaussian function also.The thicknesses and concentrations of ice particles are determined based on their new locations.With the HLE numerical model,the ice ridging process in a rectangular basin is simulated,and the simulated results are validated with the analytical solution.This method is also applied to the simulation of sea ice dynamics in a vortex wind field.At last,this HLE model is applied to the Bohai Sea,and the simulated concentration,thickness and velocity match the satellite images and the field observed data well. |
| |
| Keywords: | hybrid Lagrangian-Eulerian model sea-ice dynamics numerical model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
