| THREE DIMENSIONAL MATHEMATICAL MODEL OF SEDIMENT TRANSPORT IN ESTUARINE REGIONS-A CASE STUDY OF THE HAIHE RIVER MOUTH |
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| 作者姓名： | BAI Yuchuan SHEN Huanting and HU Shixiong |
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| 作者单位： | Asso. Prof. Dr.，Institute for Sedimentation on River and Coast Engineering，Tianjin University，Tianjin，300072，China 2 Prof.，The State Key Laboratory of Estuarine and Coastal Research，East China Normal Un |
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| 基金项目： | The study is supported by the National Natural Science Foundation of China (No. 59809006 and No.59890200), the Science Foundat |
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| 摘 要： | 1 INTRODUCTIONUnderstanding the flow characters in open channel or other water area, whether natufal water bodies(such as rivers and estuaries) or man-made strUctures (such as navigational channels, harbors), isimportant for addressing numerous hydraulic engineering problems. These include the selechons ofsuitable waste disposal sites, contndnant transport, sediment transport and other ecological problems.The major difficulty for solving these problems is that it often requires an optimal…
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THREE DIMENSIONAL MATHEMATICAL MODEL OF SEDIMENT TRANSPORT IN ESTUARINE REGIONS -A CASE STUDY OF THE HAIHE RIVER MOUTH |
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| BAI Yuchuan,SHEN Huanting,and HU Shixiong.THREE DIMENSIONAL MATHEMATICAL MODEL OF SEDIMENT TRANSPORT IN ESTUARINE REGIONS-A CASE STUDY OF THE HAIHE RIVER MOUTH[J].International Journal of Sediment Research,2000(4). |
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| Authors: | BAI Yuchuan SHEN Huanting and HU Shixiong |
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| Abstract: | A 3-D numerical model for simulating tidal flow and sediment transport in the estuarine regions is presented in this paper. The model adopts -coordinate system and carries out -coordinate transformation to the basic equations, which ensure that all horizontal area has equal numbers of calculation points in vertical direction, this method provides higher distinguishable rate to the flow and sediment transport. Under the -coordinate system, the Galerkin finite-element method is applied for horizontal domain by using a new specially interpolating shape functions, while a finite difference approximation is employed over depth. The model can be used even in the situations with a considerable variety in the water depth in the computational domain. The model is verified by a test for which analytical solutions are available and then applied to simulate the tidal current and sediment transport of the Haihe River Mouth. A modeling system of sediment transport is established for applying to muddy estuary of North China. The comparison with the field data shows that the model can well simulate the evolution process in the estuary. |
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| Keywords: | Three dimensional mathematical model Estuarine region -coordinate system Sediment transport |
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