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A Generalized Diffusion Wave Flood Routing Model

by Bryson Bates, CSIRO,
Murugesu Sivapalan, CSIRO,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A generalized diffusion wave model for flood routing is presented. The model can incorporate detailed data on natural cross sections and river bed geometry. An accurate numerical method and a quasi-analytical solution are developed, verified, and applied to route a flood wave in a hypothetical channel. Numerical experiments show that the quasi -- analytical solution compares favorably with the numerical solution. The effects of hydrograph shape on the propagation of flood waves are also investigated.

Subject Headings: Flood routing | Water waves | River and stream beds | Wave propagation | Hydrographs | Hydraulic models | Numerical methods

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