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Dam-break flows over mobile beds: Experiments and benchmark tests for numerical models

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Soares Frazao, Sandra [UCL] Canelas, R. Cao, Z. Cea, L. Chaudhry, H.M. Swartenbroekx, Catherine [UCL] Zech, Y.

In this paper, the results of a benchmark test launched within the framework of the NSF-PIRE project Modelling of Flood Hazards and Geomorphic Impacts of Levee Breach and Dam Failure are presented. Experiments of two-dimensional dam-break flows over a sand bed were conducted at Université catholique de Louvain, Belgium. The water level evolution at eight gauging points was measured as well as the final bed topography. Intense scour occurred close to the failed dam, while significant deposition was observed further downstream. From these experiments, a benchmark was proposed to the scientific community, consisting of blind test simulations, that is, without any prior knowledge of the measurements. Twelve different teams of modellers from eight countries participated in the study. Here, the numerical models used in this test are briefly presented. The results are commented upon, in view of evaluating the modelling capabilities and identifying the challenges that may open pathways for further research. © 2012 Copyright International Association for Hydro-Environment Engineering and Research.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2012
Language Anglais
Journal information "Journal of Hydraulic Research" - Vol. 50, no.4, p. 364-375 (2012)
Peer reviewed yes
Publisher Taylor & Francis Ltd. ((United Kingdom) Abingdon)
issn 0022-1686
e-issn 1814-2079
Publication status Publié
Affiliation UCL - SST/IMMC/GCE - Civil and environmental engineering
Keywords Benchmark test ; Dam failure ; Dam-break flow ; Dam-breaks ; Flood hazards ; Geomorphic impacts ; Levee breaches ; Mobile bed ; Prior knowledge ; Sand-beds ; Scientific community ; Dam break ; Benchmarking ; Computer simulation ; Dams ; Numerical models ; Sediments ; Water levels ; Experiments ; Bedform ; Benchmarking ; Dam failure ; Experiment ; Deposition ; Experimental study ; Flooding ; Flow modeling ; Flow pattern ; Gauge ; Geomorphology ; Hazard assessment ; Levee ; Mobility ; Numerical simulation ; Numerical model ; Sand ; Scour ; Sediment transport ; Two-dimensional flow ; Water level ; Belgium ; Sediment ; Bed topography ; Belgium ; Benchmark tests ; Blind test
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Bibliographic reference Soares Frazao, Sandra ; Canelas, R. ; Cao, Z. ; Cea, L. ; Chaudhry, H.M. ; et. al. Dam-break flows over mobile beds: Experiments and benchmark tests for numerical models. In: Journal of Hydraulic Research, Vol. 50, no.4, p. 364-375 (2012)
Permanent URL http://hdl.handle.net/2078.1/145739