Author(s): Zhang Xiuzhong; Wang Guangqian
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Keywords: Dike breach; Scour hole; High-resolution finite element; Numericalsimulation
Abstract: Based on the 2D shallow water equations and the nonequilibrium suspended sediment transport equation, a mathematical model is presented to predict flow motion and scour hole evolution of an instantaneous dyke-or dam-breach. To simulate the complex flow phenomenon accurately and conveniently, a high-resolution finite element scheme is applied to capture the dam-break bore. Flow analysis and scour computation are conducted for a variety of breach widths, discharges and soil composition. The results obtained are used to provide hydrodynamic conditions for structural and stability analysis of the steel, timber and earth-rock combined dam.
Year: 2001