DHI's deterministic intra-wave Sediment Transport Program, STP, is used to calculate the rates of non-cohesive sediment transport in combined waves and current.
STP is an advanced sediment transport model which accounts for the influence on the sediment transport rates of processes such as waves propagating at an arbitrary angle with respect to the current, breaking/unbroken waves, plane/ripple-covered bed, uniform/graded sediment, among others.
A premium in the form of increased CPU time compared to the simulation time required by simpler formulations must of course be paid when this method is used. In order to make this method as efficient as possible from a computational point of view, MIKE 21 ST will interpolate the sediment transport rates from sediment transport tables created beforehand. To this purpose, either the tool for Generation of Sediment Tables or the tool for Generation of Q3D Sediment Tables in the MIKE 21 Toolbox are used, depending whether the two-dimensional (2DH) or the quasi three-dimensional (Q3D) approach is selected when calculating sediment transport rates.
In MIKE 21 ST you only have to specify the path and the name of the ASCII file(s) where the sediment transport tables have been saved. You can do this by typing the information required or by browsing the disk by left-clicking with your mouse on the button to the right of the Data File entry.
For more details regarding the STP model, see STP_Q3 Scientific background.