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SToRM: A Model for Unsteady Surface Hydraulics Over Complex Terrain

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Abstract

A two-dimensional (depth-averaged) finite volume Godunov-type shallow water model developed for flow over complex topography is presented. The model is based on an unstructured cellcentered finite volume formulation and a nonlinear strong stability preserving Runge-Kutta time stepping scheme. The numerical discretization is founded on the classical and well established shallow water equations in hyperbolic conservative form, but the convective fluxes are calculated using auto-switching Riemann and diffusive numerical fluxes. The model’s implementation within a graphical user interface is discussed. Field application of the model is illustrated by utilizing it to estimate peak flow discharges in a flooding event of historic significance in Colorado, U.S.A., in 2013.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title SToRM: A Model for Unsteady Surface Hydraulics Over Complex Terrain
Year Published 2014
Language English
Description 8 p.
Larger Work Type Conference Paper
Larger Work Title Proceedings of the 11th International Conference on Hydroscience & Engineering
Conference Title ICHE 2014
Conference Location Hamburg, Germany
Conference Date Sep. 29–Oct. 2, 2014
Online Only (Y/N) N
Additional Online Files (Y/N) N