Data

Using the constant eddy formulation the eddy viscosity coefficient n_t can be specified in two different ways

·         Constant (in domain)

·         Varying in domain

For the case with values varying in domain the values are constant in the ver­tical domain and only varying in the horizontal domain. You have to prepare a data file containing the eddy viscosity coefficient 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 piecewice constant interpolation is used to map the data. If a dfs2-file is used bilinear interpolation is used to map the data.