title: Computational fluid dynamics modelling of flow and particulate contaminants sedimentation in an urban stormwater detention and settling basin.
abstract: Sedimentation is a common but complex phenomenon in the urban drainage system. The settling mechanisms involved in detention basins are still not well understood. The lack of knowledge on sediment transport and settling processes in actual detention basins is still an obstacle to the optimization of the design and the management of the stormwater detention basins. In order to well understand the sedimentation processes, in this paper, a new boundary condition as an attempt to represent the sedimentation processes based on particle tracking approach is presented. The proposed boundary condition is based on the assumption that the flow turbulent kinetic energy near the bottom plays an important role on the sedimentation processes. The simulated results show that the proposed boundary condition appears as a potential capability to identify the preferential sediment zones and to predict the trapping efficiency of the basin during storm events.
authors.affiliation: Université de Lyon, INSA-Lyon, LGCIE, 34 Avenue des Arts, 69621, Villeurbanne Cedex, France.
authors.forename: Hexiang
authors.initials: H
authors.lastname: Yan
authors.forename: Gislain
authors.initials: G
authors.lastname: Lipeme Kouyi
authors.forename: Carolina
authors.initials: C
authors.lastname: Gonzalez-Merchan
authors.forename: Céline
authors.initials: C
authors.lastname: Becouze-Lareure
authors.forename: Christel
authors.initials: C
authors.lastname: Sebastian
authors.forename: Sylvie
authors.initials: S
authors.lastname: Barraud
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Bertrand-Krajewski
mesh_terms: D002947:Cities; D019015:Geologic Sediments / Q000032:analysis* / Q000737:chemistry; D057446:Hydrodynamics; D008956:Models, Chemical; D011891:Rain; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis*; D014876:Water Pollution / Q000706:statistics & numerical data
chemical_list: D014873:Water Pollutants