| 水沙河口衔接数学模型的研究及其应用 |
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| 引用本文： | 刘江川,李大鸣,李玲玲. 水沙河口衔接数学模型的研究及其应用[J]. 水利水电技术, 2011, 42(1) |
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| 作者姓名： | 刘江川 李大鸣 李玲玲 |
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| 作者单位： | 1. 天津大学建筑工程学院暨港口与海洋工程教育部重点实验室,天津300072;长春工程学院水利与环境工程学院,吉林长春130012
2. 天津大学建筑工程学院暨港口与海洋工程教育部重点实验室,天津,300072 |
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| 摘 要： | 在河口水流、泥沙数值计算时提出一、二维衔接的数学模型.根据一、二维水流连续方程、运动方程、悬沙扩散方程、两相流底沙运动方程、床面演变方程,对一维河道采用河网三级联解法、迎风差分格式,对二维海区采用有限元加权集中质量法、三角差分格式,建立水沙河口衔接数学模型.将此模型应用于天津泰达永定新河河口工程的研究上,经实测水沙资料验证,计算值与实测值基本吻合.为河口改造时引起的河道与海区的水流及泥沙稳定性问题提供了可行的研究方法.
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| 关 键 词： | 河口一、二维衔接模式 泥沙数学模型 两相流底沙运动 |
Study on combined numerical model for flow and sediment carrying estuary and its application |
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| LIU Jiangchuan,LI Daming,LI Lingling. Study on combined numerical model for flow and sediment carrying estuary and its application[J]. Water Resources and Hydropower Engineering, 2011, 42(1) |
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| Authors: | LIU Jiangchuan LI Daming LI Lingling |
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| Affiliation: | LIU Jiangchuan1,2,LI Daming1,LI Lingling1(1.School of Civil Engineering & Key Laboratory of Harbor & Ocean Engineering,Ministry of Education,Tianjin University,Tianjin 300072,China,2.School of Water and Environment Engineering,Changchun Institute of Technology,Changchun 130012,Jilin,China) |
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| Abstract: | A 1-D and 2-D combined numerical model is put forward during the numerical calculation of flow and sediment at an esturary.In accordance with the 1-D and 2-D dimensional flow continuity equation,the motion equation,the diffusion equation for the suspended sediment,the bed load movement equation for the two-phase flow and the equation for river bed evolution,the three-steps-solving method for river network and the upwind difference scheme are applied to the 1-D river channel;while the FEM weighted lump-mass ... |
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| Keywords: | 1-D and 2-D combined numerical model for estuary sediment numerical model two-phase flow bed load movement |
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