| 挟沙水流引起底床冲淤变化的数值模拟 |
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| 引用本文： | 谷汉斌,李炎保,D.M.Causon,林鹏智.挟沙水流引起底床冲淤变化的数值模拟[J].港工技术,2011,48(1):5-9. |
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| 作者姓名： | 谷汉斌 李炎保 D.M.Causon 林鹏智 |
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| 作者单位： | 曼彻斯特城市大学数学模型与流动分析中心;交通运输部天津水运工程科学研究院;天津大学建筑工程学院港口工程系;四川大学水力学与山区河流开发保护国家重点实验室; |
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| 基金项目： | 国家自然科学基金(50779045); 四川大学水力学与山区河流开发保护国家重点实验室开放基金(SKLH-OF-0801) |
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| 摘 要： | 本模型为垂向二维数学模型,以修正的NS方程为基础,采用粒子Level Set方法和对流扩散方程分别模拟自由水面和悬沙运动,根据底床物质质量平衡的原则计算底床变形,可模拟水流引起的底床冲淤变化.该模型将水流模型扩展到泥沙运动领域,以二相流概念简化自由水面边界条件,模拟悬沙、底沙和底床变形;采用固定的笛卡尔坐标,不需重新划...
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| 关 键 词： | 挟沙水流 垂向二维数学模型 悬沙 底沙 床面变形 |
Numerical Simulation on Bed Scouring and Silting Induced by Water Flow with Suspended Silt |
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| Gu Hanbin,Li Yanbao,D.M.Causon,Lin Peng.Numerical Simulation on Bed Scouring and Silting Induced by Water Flow with Suspended Silt[J].Port Engineering Technology,2011,48(1):5-9. |
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| Authors: | Gu Hanbin Li Yanbao DMCauson Lin Peng |
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| Institution: | Gu Hanbin1,4,Li Yanbao2,D.M. Causon1,3,Lin Pengzhi3(1.Centre for Mathematical Modeling and Flow Analysis,Department of Computing and Mathematics,Manchester Metropolitan University,Manchester M15GD,UK,2.Port Engineering Department,School of Civil Engineering,Tianjin University,Tianjin 300071,China,3.State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu Sichuan,610065,4.Tianjin Research Institute for Water Transport Engineering,M.O.C.,Tianjin 300456,China) |
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| Abstract: | The model is a vertical 2D numerical model based on the revised NS equation.The Particles Level Set method is adopted for the free surface simulation and the suspended silt motion is simulated by convection and diffusing equation.The bed distortion is calculated according to the principle of bed material equilibrium and the bed scouring and silting induced by water flow is simulated.The model make water flow model extend to the field of silt motion.The notion of two phase flow is used to simplify free water... |
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| Keywords: | water flow with suspended silt vertical 2D numerical model suspended silt bed silt bed distortion |
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