Data

When "Whole domain" is specified for the type of domain input you have to prepare a data file containing the necessary item(s) 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 piecewise constant interpolation is used to map the data. If a dfs2-file is used bilinear interpolation is used to map the data. In case the values are varying in time 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.