Data

Selecting the specified concentration option the format of the concentration (in component unit) can be specified as

·         Constant (in both time and domain)

·         Varrying in time and constant in domain

·         Varying in both time and domain

For the case with concentration varying in time but constant in domain you have to prepare a data file containing the concentration (in component unit) before you set up the hydrodynamic simulation. The data file must be a time series file (dfs0). The data must cover the complete simulation period. The time step of the input data file does not, however, have to be the same as the time step of the hydrodynamic simulation. A linear interpolation will be applied if the time steps differ.

For the case with concentration varying both in time and domain you have to prepare a data file containing the concentration (in component units) 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. The data must cover the complete simulation period. The time step of the input data file does not, however, have to be the same as the time step of the hydrodynamic simulation. A linear interpolation will be applied if the time steps differ.