Data

The initial thickness of each layer 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 layer thickness before you set up the 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 piecewise constant interpolation is used to map the data. If a dfs2-file is used, a 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 times of the file.

The composition (content in % of the fractions) of each layer 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 content in % for each fraction before you set up the 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 piece­wise constant interpolation is used to map the data. If a dfs2-file is used, a 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 times of the file.