title: Fine sediment retention in storage chambers: an assessment of time-dependent effects.
abstract: The optimisation of the design of a storage chamber is generally based upon some measure of the chamber's sedimentation efficiency. In the UK, chambers that minimise the deposition of fine sediments are preferred. Previous laboratory and CFD-based studies to measure efficiency have focused on steady flow conditions. However, both the flow hydraulics within a storage chamber and the pollutant loading in the incoming sewage vary markedly during storm events. This paper outlines a CFD-based approach for determining "overall" chamber efficiency. The approach employs an unsteady volume-of-fluid multiphase model and stochastic particle tracking. Preliminary results from a simplified two-dimensional model are presented.
authors: Department of Civil and Structural Engineering, University of Sheffield, UK. v.stovin@sheffield.ac.uk
authors: V R
authors: VR
authors: Stovin
authors: J P
authors: JP
authors: Grimm
authors: A J
authors: AJ
authors: Saul
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments; D008962:Models, Theoretical; D011891:Rain; D012722:Sewage; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014872:Water Movements
chemical_list: D012722:Sewage