A two-dimensional parabolic model for flood assessment
Keywords:flood, bidimensional simulation, shallow water equations, DEM, storage cells
A two-dimensional numerical model for simulating water flood is presented. The model formulation employs a parabolic approximation for the shallow-water equations. The flow equations are solved by means of a numerical semi-implicit method based on mass balance applied to cells whose elevation is derived directly from topographic data survey described by DEM. Boundary conditions are described as prescribed level-discharge relations. A comparison with a physical imposed model and a real application of an urban area flood are described.
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Copyright (c) 2006 Italian journal of engineering geology and environment
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