Data

The format of the initial concentration (in component unit) for each compo­nent can be specified as

·         Constant (in domain)

·         Varying in domain

For the case with varying in domain you have to prepare a data file containing the concentration (in component unit) before you set up the hydrodynamic simulation.

In the case of 2D simulation thefile must be a 2D unstructured data file  (dfsu) or a 2D grid data file (dfs2).

In the case of 3D simulation thefile must be a 3D unstructured data file  (dfsu) or a 3D grid data file (dfs3).

The area in the data file must cover the model area. If a 2D dfsu-file is used piecewice constant interpolation is used to map the data. If a 3D dfsu-file is used, the mesh in the data file must match exactly the mesh in the simulation. If a dfs2 or dfs3-file is used bilinear interpolation is used to map the data. In case the input data file contains a single time step, this field is used. In case the file contains several time steps, e.g. from the results of a previous simula­tion, the actual starting time of the simulation is used to interpolate the field in time. Therefore the starting time must be between the start and end time of the file.