Data

The format of the critical shear stress for each particle class can be specified as:

·         Constant (in domain)

·         Varying in domain

A typical shear stress value is 0.1 N/m².

For the case with varying in domain you have to prepare a data file containing the critical shear stress before you set up the hydrodynamic simulation. The file must be a 2D unstructured data file (dfsu) or a 2D grid data file (dfs2).

The area in the data file must cover the model area. If a dfsu-file is used, a piecewice constant interpolation is used to map the data. If a dfs2-file is used, a bilinear interpolation is used to map the data.

You furthermore have to define the relative sediment density and mean diam­eter of the particles in the class.