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Add-On Modules
Graded Sediment Transport (GST)
The Graded Sediment Transport (GST) module is used in river sedimentation studies which require detailed information on the spatial and temporal
variation of the grain size distribution.
The bed material is represented by two layers - an active layer overlying an inactive, passive layer. Each layer is divided into an equal number of
fractions specified by the user. A mean grain size for each fraction and the percentage distribution for both the active and the passive layers must be specified. The fraction mean grain sizes are global but the
initial percentage size distributions may be specified globally or locally. The sum of the initial percentage distributions for both the active and the passive layers must equal 100 per cent.
It is possible to specify a lower limit for the active layer depth and an initial depth for the passive layer. The effects of shielding can also be
included in the simulation.
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