title: Forces on sanitary solids in small sewers.
abstract: An experimental and modelling study has been carried out to investigate the movement mechanisms and behaviour of large sanitary solids in small sewers. The overall performance of the model has already been verified in terms of limiting solids transport distance, but in this paper the wave profile across the solid is also shown to fit model predictions well when compared visually. Further insight into how solids behave is also explored in this paper by plotting the interplay of the main horizontal and vertical forces acting on the solid. These results illustrate the dynamics of movement initiation, transport and deposition and indicate the most important forces. Model predictions of movement 'time per hop' have also been experimentally verified, giving further credence to the model. Experimental verification of the magnitude of the forces involved is planned.
authors.affiliation: Urban Water Research Group, Dept. of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK. d.butler@imperial.ac.uk
authors.forename: D
authors.initials: D
authors.lastname: Butler
authors.forename: K
authors.initials: K
authors.lastname: Littlewood
authors.forename: N
authors.initials: N
authors.lastname: Orman
mesh_terms: D004323:Drainage, Sanitary; D009038:Motion; D012722:Sewage / Q000737:chemistry*
chemical_list: D012722:Sewage