SToRM: A Model for 2D environmental hydraulics

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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, SToRM, is based on an unstructured cell-centered finite volume formulation and on nonlinear strong stability preserving Runge-Kutta time stepping schemes. 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. Computational efficiency is achieved through a parallel implementation based on the OpenMP standard and the Fortran programming language. SToRM’s implementation within a graphical user interface is discussed. Field application of SToRM is illustrated by utilizing it to estimate peak flow discharges in a flooding event of the St. Vrain Creek in Colorado, U.S.A., in 2013, which reached 850 m3/s (~30,000 f3 /s) at the location of this study.

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Additional publication details

Publication type Conference Paper
Title SToRM: A Model for 2D environmental hydraulics
Year Published 2017
Language English
Publisher Proceedings of the 3rd Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling, April 19-23, 2015, Reno, Nevada, USA
Contributing office(s) National Research Program - Central Branch
Description 13 p.
First page 350
Last page 362
Conference Title 3rd Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling
Conference Location Reno, NV
Conference Date April 19-23, 2015
Country United States
State Colorado
Other Geospatial St. Vrain Creek