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New Methods for Modelling Dam-Break Wave

by A. Paquier, CEMAGREF, Lyon, France,



Document Type: Proceeding Paper

Part of: Modelling of Flood Propagation Over Initially Dry Areas

Abstract:

Recent developments in numerical analysis for hyperbolic equations have led to new methods which solve shallow water equations including complementary equations for hydraulic jumps. An explicit finite volume scheme has also been developed to solve 2-D problems such as flooding of an initially dry plain. The study of the failure of Agly River Dam implied the modelling of a dam-break wave coming over an embankment which crossed the flow direction. In 1-D, sediment transport can also be modelled in a simplified way. The example of the historical failure of Lawn Lake Dam shows the influence of sediment deposits on the maximum water levels and, more generally, the interest of such a modelling.

Subject Headings: Dam failures | Embankment dams | Numerical models | Hydraulic models | Failure analysis | Wave equations | Sediment transport

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