| 河道平面二维水沙数学模型的有限元方法 |
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| 引用本文： | 张细兵,董耀华,殷瑞兰. 河道平面二维水沙数学模型的有限元方法[J]. 泥沙研究, 2002, 2(6): 60-65 |
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| 作者姓名： | 张细兵 董耀华 殷瑞兰 |
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| 作者单位： | 长江科学院,湖北,武汉,430010 |
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| 基金项目： | 国家自然科学基金，长江水利委员会资助重大项目 (编号 5 0 0 9962 0) |
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| 摘 要： | 作者采用有限元方法建立起一套河道平面二维水流泥沙数学模型。在前人研究的基础上 ,采用了质量集中的处理方法 ,提出了压缩存储的方法 ,从而大大减少了计算存储量。针对有限元法时间步长需取得较短问题 ,采用了“预报 校正 迭代”的算法 ,提出了“非恒定 恒定 非恒定流”的算法 ,既能解决工程实际问题 ,又大大减少了计算量。作者以下荆江监利河段为例进行泥沙冲淤计算 ,计算结果与实测值符合较好 ,从而证明了模型的可靠性
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| 关 键 词： | 水流泥沙 有限元 模型验证 |
| 文章编号： | 0468-155X(2002)06-0060-06 |
| 修稿时间： | 2001-07-10 |
Finite Element Method for 2-D Flow and Sediment Mathematical Model in Channels |
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| ZHANG Xi bing,DONG Yao hua,YIN Rui lan. Finite Element Method for 2-D Flow and Sediment Mathematical Model in Channels[J]. Journal of Sediment Research, 2002, 2(6): 60-65 |
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| Authors: | ZHANG Xi bing DONG Yao hua YIN Rui lan |
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| Abstract: | A 2 D flow and sediment mathematical model by the finite element method is established in the article. Based on the former research, methods of Mass Concentration and Compressed Memory are used to reduce the needed memory. Since the methods of Prediction Correct Iteration and Unsteady Steady Unsteady are adopted, the time step becomes longer and the calculation is greatly reduced. Simulation is carried out in the Jianli reach of the lower Jingjiang river and shows that the calculated results are in good agreement with the field data. |
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| Keywords: | flow and sediment finite element method model verification |
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