| A 2D MATHEMATICAL MODEL FOR THE BED DEFORMATION IN THE LOWER YELLOW RIVER |
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| 作者姓名： | Junqiang XIA Guangqian WANG |
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| 作者单位： | Assistant Prof.，Department of Hydraulic Engineering，Tsinghua University，Prof.，Department of Hydraulic Engineering，Tsinghua University Beijing 100084，China，Beijing 100084，China |
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| 摘 要： | 1 BANK EROSION IN THE LOWER YELLOW RIVER In alluvial rivers, riverbeds are always in a state of transition and development. Two kinds of deformations result for the fluvial process according to certain basic characteristics. One is longitudinal deformation that is characterized by the deformation of a riverbed in the direction of streamwise flow such as riverbed scour or deposition. The other is transverse or lateral deformation that is distinguished by the deformation of a riverb…
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A 2D MATHEMATICAL MODEL FOR THE BED DEFORMATION IN THE LOWER YELLOW RIVER |
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| Junqiang XIA,Guangqian WANG.A 2D MATHEMATICAL MODEL FOR THE BED DEFORMATION IN THE LOWER YELLOW RIVER[J].International Journal of Sediment Research,2003(2). |
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| Authors: | Junqiang XIA and Guangqian WANG Assistant Prof |
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| Institution: | Junqiang XIA1 and Guangqian WANG2 1 Assistant Prof.,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China 2 Prof.,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China,E-mail: dhhwgq@tsinghua.edu.cn |
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| Abstract: | This paper studies the nature of bank erosion in the Lower Yellow River. Numerical models available for simulating the longitudinal and lateral deformation of a riverbed are compared. Most of them are not applicable to model the bed deformation in the Lower Yellow River. A two-dimensional (2D) composite model consisting of a 2D flow-sediment mathematical submodel and a riverbank retreat and advance submodel is developed to simulate the longitudinal and lateral deformation. The model is validated through an example of the bed deformation process of the Huayuankou-Laitongzhai reach of the Lower Yellow River. The results agree well with the measured data in the water level, velocity fields, and variations of cross-sectional profiles. The model is capable of simulating the longitudinal deformation of a riverbed and the processes of bank retreat and advance, especially the process of bank lateral erosion and failure. |
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| Keywords: | The Lower Yellow River Bank erosion and failure Longitudinal and lateral deformation of a riverbed Bank erosion model 2D composite model |
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