Author(s): Xiangsan Wang
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Keywords: No Keywords
Abstract: The water current of river network belongs to the unsteady flow. One-dimentional unsteady flow can be described by the famous Saint-Venant System of Equations. The demountable finite element method of unsteady flow of river network is based on the numerical value calculation of the open channel flow, discretizes the flow area into several small units, changes the Saint-Venant System of Equations into finite element equations by using Galerkin Method, and combines the analysis and the constrained disposition of the spreading of wave at the mouth of river arms, makes an embedded programme in BASIC language adopting the two-step condensable finite method of demonstration. By this means, the water stage and discharge hydrograph of the mouth of river arm in the network can be obtained by the electronic computer.
Year: 2001