| 天然分汊河道平面二维水流泥沙数值模拟研究 |
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| 引用本文： | 余新明,谈广鸣,赵连军. 天然分汊河道平面二维水流泥沙数值模拟研究[J]. 四川大学学报(工程科学版), 2007, 39(1): 33-37 |
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| 作者姓名： | 余新明 谈广鸣 赵连军 |
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| 作者单位： | 1. 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072
2. 黄河水利科学研究院,河南,郑州,450000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | 基于无结构化网格,采用有限元方法,建立起一种适合于分汊河道的平面二维水沙数学模型,模型采用质量集中的简化处理和预估校正的时间推进算法,较好地解决有限元计算存储量和计算速度。并以武汉天兴洲汊道段为例,进行水沙验证计算,验证结果与实际符合较好,证明模型能较好地模拟天然分汊河道的水流泥沙运动及河床变形情况,因此可为分汊型河道的整治提供技术支持。
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| 关 键 词： | 分汊河道 有限元 二维水沙数值模拟 |
| 文章编号： | 1009-3087（2007）01-0033-05 |
| 收稿时间： | 2005-12-21 |
| 修稿时间： | 2005-12-21 |
Planar 2-D Flow and Sediment Numerical Modeling of Branching River |
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| YU Xin-ming,TAN Guang-ming,ZHAO Lian-jun,WANG Jun. Planar 2-D Flow and Sediment Numerical Modeling of Branching River[J]. Journal of Sichuan University (Engineering Science Edition), 2007, 39(1): 33-37 |
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| Authors: | YU Xin-ming TAN Guang-ming ZHAO Lian-jun WANG Jun |
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| Affiliation: | State Key Lab. of Water Resources and Hydropower Eng. Sci.,Wuhan 430072,China;State Key Lab. of Water Resources and Hydropower Eng. Sci.,Wuhan 430072,China;Inst. of Hydraulic Research,YRCC,Zhengzhou 450003,China |
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| Abstract: | Based on triangular grids,the planar 2-D flow and sediment mathematical model in natural branching river has been established by using the finite element method.Since the mass concentration and pre-estimated and verified iteration are used to solve the equations,the question of memory units and calculation velocity are settled quite well.Simulation calculation carried out on Tianxingzhou reach of the Yangtze River shows the result is closely fitted with the field data,which showes that the model is creditable,it can provide the technical support for research on the natural branching river regulation. |
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| Keywords: | branching river finite element method 2-D flow and sediment mathematical model |
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