| NUMERICAL SIMULATIONS OF SCOUR AND DEPOSITION IN A CHANNEL NETWORK |
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| 作者姓名： | Hong-Yuan LEE Hui-Ming HSIEH |
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| 作者单位： | Dept.of Civil Engr，National Taiwan Univ，Dept.of Information Management，Diwan College of Management Prof，Taipei，Taiwan，China，Assistant Professor，Tainan，Taiwan，China. |
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| 摘 要： | 1 INTRODUCTION Evolution of the river bed in alluvial channels has been studied by many researchers using analytical and numerical approaches. The use of analytical approach alone is insufficient for solving natural river engineering problems. With rapid growth in computer technology, numerical models have become a popular means for the study of mobile bed hydraulics. During the past decade, several numerical models have been developed. Most of the computer codes, such as HEC2SR (Si…
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NUMERICAL SIMULATIONS OF SCOUR AND DEPOSITION IN A CHANNEL NETWORK |
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| Hong-Yuan LEE,Hui-Ming HSIEH.NUMERICAL SIMULATIONS OF SCOUR AND DEPOSITION IN A CHANNEL NETWORK[J].International Journal of Sediment Research,2003,18(1). |
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| Authors: | Hong-Yuan LEE Hui-Ming HSIEH |
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| Abstract: | A numerical model,which is capable of simulating scouring and deposition behaviors in a channel network,is developed in this study. The model treats suspended load and bed load separately,and hence is able to simulate the depositional behavior of the suspended sediment under a nonequilibrium process. The model solves the de Saint Venant equation,and thus can be applied to unsteady flow conditions. An internal boundary condition based on the sediment transport capacity was proposed to distribute the incoming sediment load into the downstream links. An assessment of this model's performance has been conducted through a comparison to an analytical solution. The application of this model to the Tanhsui River system in Taiwan,and several hydraulic model studies gave very convincing results. |
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