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Dam-break flows over mobile beds / Soares-Frazão, Sandra in Journal of hydraulic research, Vol. 50 N° 4 (Juillet/Août 2012) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 50 N° 4 (Juillet/Août 2012) . - pp. 364-375 Titre : Dam-break flows over mobile beds : Experiments and benchmark tests for numerical models Type de document : texte imprimé Auteurs : Soares-Frazão, Sandra, Auteur ; Ricardo Canelas, Auteur ; Zhixian Cao, Auteur Année de publication : 2012 Article en page(s) : pp. 364-375 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Benchmark  test  Dam  break  Experiment  Numerical  simulation  Sediment Résumé : 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. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.689682 [article] Dam-break flows over mobile beds : Experiments and benchmark tests for numerical models [texte imprimé] / Soares-Frazão, Sandra, Auteur ; Ricardo Canelas, Auteur ; Zhixian Cao, Auteur . - 2012 . - pp. 364-375. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 50 N° 4 (Juillet/Août 2012) . - pp. 364-375 Mots-clés : Benchmark  test  Dam  break  Experiment  Numerical  simulation  Sediment Résumé : 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. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.689682