Mathematical Modeling of Compound Channel with High Sediment Concentration

by Xiaoqing Yang, San Diego State Univ, United States,
Howard H. Chang, San Diego State Univ, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


The mathematical model for erodible channels, FLUVIAL-12, has been extended to simulate the fluvial processes in the lower reach of the Yellow River in China. Fluvial processes in the Yellow River during a flood are characterized by deposition in the flood plains associated with overbank flow, and scour of the main channel. Sediment rates for the main channel and flood plains are computed separately. The rate of sediment supply to each subsection is computed from the sediment transport of the corresponding part of the upstream section and the exchange between the main channel and flood plains. The scour and fill for the main channel and flood plains are then determined separately according to the imbalance between its sediment supply and transport rate.

Subject Headings: Mathematics | Hydraulic models | Mathematical models | Sediment | Scour | Transport rates | Hydrologic models | Sediment transport | China | Asia | Yellow River

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