Computing flooding of crossroads with obstacles using a 2D numerical model - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Hydraulic Research Année : 2017

Computing flooding of crossroads with obstacles using a 2D numerical model

Pierre-Henri Bazin
  • Fonction : Auteur
  • PersonId : 767748
  • IdRef : 185830684
André Paquier

Résumé

Urban flood flow characteristics are usually computed using two-dimensional numerical models. How such modelling can be implemented in dense urban areas with obstacles is investigated in this paper. A strategy for representing the effect of urban obstacles in various flow conditions is proposed. The comparison between the available laboratory measurements and the model results show that if the water depth is high enough and the flow remains subcritical, two-dimensional modelling with constant eddy viscosity represents the effect of the obstacles on the flow distribution accurately, even with a coarse mesh. In contrast, if the water depth is low and/or the flow becomes supercritical, the description of the flow is not sufficient and it generates errors in the flow distribution at the crossroads.
Fichier principal
Vignette du fichier
BazinObstacle.pdf (872.39 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01724983 , version 1 (21-11-2018)

Identifiants

Citer

Pierre-Henri Bazin, Emmanuel Mignot, André Paquier. Computing flooding of crossroads with obstacles using a 2D numerical model. Journal of Hydraulic Research, 2017, 55 (1), pp.72-84. ⟨10.1080/00221686.2016.1217947⟩. ⟨hal-01724983⟩
99 Consultations
175 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More