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Simulations of the New Orleans 17th Street Canal breach flood / Sylvie Van Emelen in Journal of hydraulic research, Vol. 50 N° 1 (Janvier/Février 2012) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 50 N° 1 (Janvier/Février 2012) . - pp. 70-81 Titre : Simulations of the New Orleans 17th Street Canal breach flood Type de document : texte imprimé Auteurs : Sylvie Van Emelen, Auteur ; Soares-Frazão, Sandra, Auteur ; Cyrus K. Riahi-Nezhad, Auteur Année de publication : 2012 Article en page(s) : pp. 70-81 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Breaching  Finite  volume  Katrina  Scale  model  Urban  flooding Résumé : The City of New Orleans is surrounded by an intricate network of floodwalls and dikes built to protect it from flooding from the Mississippi River and Lake Pontchartrain. In 2005, following Hurricane Katrina, New Orleans experienced one of the most devastating urban floods in recent history caused by several dike breaches. This work presents an idealized case study of a part of this event on a scale model. It concerns the flow through one of these breaches and flooding in the surrounding urban area. The scale model reproduces part of the remaining dike, the complex morphology caused by the breach and a number of houses around the area. The flow field computed by a two-dimensional depth-averaged finite-volume numerical model is compared with measurements on the scale model. As the transient part of the flood is quite short, the numerical and experimental results were compared under steady-state flow, showing satisfactory agreement. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.642578 [article] Simulations of the New Orleans 17th Street Canal breach flood [texte imprimé] / Sylvie Van Emelen, Auteur ; Soares-Frazão, Sandra, Auteur ; Cyrus K. Riahi-Nezhad, Auteur . - 2012 . - pp. 70-81. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 50 N° 1 (Janvier/Février 2012) . - pp. 70-81 Mots-clés : Breaching  Finite  volume  Katrina  Scale  model  Urban  flooding Résumé : The City of New Orleans is surrounded by an intricate network of floodwalls and dikes built to protect it from flooding from the Mississippi River and Lake Pontchartrain. In 2005, following Hurricane Katrina, New Orleans experienced one of the most devastating urban floods in recent history caused by several dike breaches. This work presents an idealized case study of a part of this event on a scale model. It concerns the flow through one of these breaches and flooding in the surrounding urban area. The scale model reproduces part of the remaining dike, the complex morphology caused by the breach and a number of houses around the area. The flow field computed by a two-dimensional depth-averaged finite-volume numerical model is compared with measurements on the scale model. As the transient part of the flood is quite short, the numerical and experimental results were compared under steady-state flow, showing satisfactory agreement. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.642578