Data

If specified values (Dirichlet boundary condition)  is selected the turbulent kinetic energy and the dissipation of TKE at the boundary can be specified in three different ways:

·         Constant (in time and along boundary)

·         Variable in time and constant along boundary

·         Variable in time and along boundary

For the case with boundary data varying in time but constant along the boundary you have to prepare a data file containing the boundary values  (turbulent kinetic energy and the dissipation of TKE) 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. You can choose between different types of interpo­lation (see Interpolation type).

For the case with boundary data varying both in time and along the boundary you have to prepare a data file containing the boundary values (turbulent kinetic energy and the dissipation of TKE) before you set up the hydrody­namic simulation. The file must be a dfs2 file or a 2D dfsu file containing infor­mation from a vertical plane. 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. You can choose between different types of time interpolation (see Interpolation type).