SToRM: A Model for 2D environmental hydraulics

Francisco J. M. Simões

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USGS · 70190126

SToRM: A Model for 2D environmental hydraulics

Francisco J. M. Simões

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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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Conference Paper

Source-reported bounding extent: 40.13400343670899° to 40.184381605965704° latitude; -105.05315780639648° to -104.97848510742188° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Francisco J. M. Simões. 2017. SToRM: A Model for 2D environmental hydraulics. https://pubs.usgs.gov/publication/70190126

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