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Comparison of two-dimensional flood propagation models: SRH-2D and Hydro_AS-2D

Basile Lavoie and Tew-Fik Mahdi

Article (2017)

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Cite this document: Lavoie, B. & Mahdi, T.-F. (2017). Comparison of two-dimensional flood propagation models: SRH-2D and Hydro_AS-2D. Natural Hazards, 86(3), p. 1207-1222. doi:10.1007/s11069-016-2737-7
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Abstract

This article presents a comparison between two two-dimensional finite volume flood propagation models: SRH-2D and Hydro_AS-2D. The models are compared using an experimental dam-break test case provided by Soares-Frazão (J Hydraul Res, 2007. doi: 10.1080/00221686.2007.9521829). Four progressively refined meshes are used, and both models react adequately to mesh and time step refinement. Hydro_AS-2D shows some unphysical oscillations with the finest mesh and a certain loss of accuracy. For that test case, Hydro_AS-2D is more accurate for all meshes and generally faster than SRH-2D. Hydro_AS-2D reacts well to automatic calibration with PEST, whereas SRH-2D has some difficulties in retrieving the suggested Manning’s roughness coefficient.

Uncontrolled Keywords

Model comparison, Two-dimensional flow modeling, Hydro_AS-2D, SRH-2D, Automatic calibration

Open Access document in PolyPublie
Subjects: 1000 Génie civil > 1000 Génie civil
1000 Génie civil > 1006 Génie hydrologique
Department: Département des génies civil, géologique et des mines
Research Center: Non applicable
Funders: CRSNG/NSERC
Grant number: RGPIN-2016-06413
Date Deposited: 26 Feb 2018 15:43
Last Modified: 24 Oct 2018 16:12
PolyPublie URL: https://publications.polymtl.ca/2999/
Document issued by the official publisher
Journal Title: Natural Hazards (vol. 86, no. 3)
Publisher: Springer
Official URL: https://doi.org/10.1007/s11069-016-2737-7

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