Data

Selecting 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, piecewice constant interpolation is used to map the data. If a dfs2-file or a dfs3-file is used, bilinear interpolation is used to map the data.

Selecting Dispersion coefficient option the format of the dispersion coefficent can be specified as:

·         Constant

·         Varying in domain

For the case with values varying in domain the values are constant in the ver­tical domain (in case of 3D simulation) and only varying in the horizontal domain. You 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 data grid file (dfs2). The area in the data file must cover the model area. If a dfsu-file is used piecewice, constant inter­polation is used to map the data. If a dfs2-file is used, bilinear interpolation is used to map the data.