The State of the Art in Sediment Transport Modelling

by L. C. van Rijn, Delft Hydraulics, Netherlands,

Abstract: The physical understanding and mathematical modelling of the water and sediment motion in rivers, estuaries and coastal waters have made much progress in recent years by various research institutes. This has led to a number of more or less ready to use numerical model systems, but it has also raised many new research questions. According to the number of space dimensions and spatial orientation, four classes of models are considered in this paper: (quasi-) three-dimensional, two-dimensional vertical, two-dimensional horizontal and one-dimensional models. Among the conclusions reached from this review is that the three and two dimensional models are making substantial progress at the various institutes. Most models are focussing on the short-term predictions (initial bed level changes) because of limited computer facilities (budget). Long term predictions will become within reach when supercomputers are more generally available.

Subject Headings: Hydrologic models | Two-dimensional models | Mathematical models | Sediment transport | Three-dimensional models | Mathematics | Numerical models | Computer models

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