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首页> 美国政府科技报告 >CHNTRN: A CHaNnel TRaNsport Model for Simulating Sediment and Chemical Distribution in a Stream/River Network
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CHNTRN: A CHaNnel TRaNsport Model for Simulating Sediment and Chemical Distribution in a Stream/River Network

机译：CHNTRN：用于模拟河流/河流网络中沉积物和化学分布的CHaNnel TRaNsport模型

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This report presents the development of a CHaNnel TRaNsport model for simulating sediment and chemical distribution in a stream/river network. A particular feature of the model is its capability to deal with the network system that may consist of any number of joined and branched streams/rivers of comparable size. The model employs a numerical method - an integrated compartment method (ICM) - which greatly facilitates the setup of the matrix equation for the discrete field approximating the corresponding continuous field. Most of the possible boundary conditions that may be anticipated in real-world problems are considered. These include junctions, prescribed concentration, prescribed dispersive flux, and prescribed total flux. The model is applied to two case studies: (1) a single river and (2) a five-segment river in a watershed. Results indicate that the model can realistically simulate the behavior of the sediment and chemical variations in a stream/river network. 11 references, 10 figures, 3 tables. (ERA citation 08:052241)

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