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A three-dimensional model of suspended particulate sediment transport
AbstractDepth-averaged, one-dimensional and two-dimensional numerical models of bed and suspended particulate sediment transport provide unreliable answers for siltation and erosion quantities in situations dominated by three-dimensional flow patterns, as occur in harbour entrances due to flow separation and wind and density currents. Consequently, a numerical scheme has been developed which solves the complete three-dimensional diffusion-advection equation for suspended sediment concentration and thereby makes possible the study of siltation problems in complex, three-dimensional flows. The model analogue is based on a splitting technique and employs a mixed characteristics and finite difference approach. The accuracy and usefulness of the resulting scheme have been investigated by applying it to a number of hypothetical situations and to a laboratory situation involving the transport and dispersal of lightweight sediment. The results of the various tests show that the proposed approach works well and provides a useful basis for the study of practical problems.
A three-dimensional model of suspended particulate sediment transport
AbstractDepth-averaged, one-dimensional and two-dimensional numerical models of bed and suspended particulate sediment transport provide unreliable answers for siltation and erosion quantities in situations dominated by three-dimensional flow patterns, as occur in harbour entrances due to flow separation and wind and density currents. Consequently, a numerical scheme has been developed which solves the complete three-dimensional diffusion-advection equation for suspended sediment concentration and thereby makes possible the study of siltation problems in complex, three-dimensional flows. The model analogue is based on a splitting technique and employs a mixed characteristics and finite difference approach. The accuracy and usefulness of the resulting scheme have been investigated by applying it to a number of hypothetical situations and to a laboratory situation involving the transport and dispersal of lightweight sediment. The results of the various tests show that the proposed approach works well and provides a useful basis for the study of practical problems.
A three-dimensional model of suspended particulate sediment transport
O'Connor, B.A. (author) / Nicholson, J. (author)
Coastal Engineering ; 12 ; 157-174
1987-12-07
18 pages
Article (Journal)
Electronic Resource
English
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