Data

Selecting dispersion coefficient option the format of the dispersion coefficient can be specified as

·         Constant (in both time and domain)

·         Varying in domain

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

When selecting the scaled eddy viscosity option the format of the scaling fac­tor can be specified as

·         Constant

·         Varying in domain

For the case with values varying in domain you have to prepare a data file containing the scaling factor before you set up the hydrodynamic simulation. For a 2D simulation the file must be a 2D unstructured data file (dfsu) or a 2D data grid file (dfs2). For a 3D simulation the file must be a 3D unstructured data file (dfsu) or a 3D data grid file (dfs3). 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 dfs2-file or a dfs3-file is used, a bilinear interpola­tion is used to map the data.