Initial Conditions

Initial conditions are required by most numerical models to define the initial state of hydrodynamic and other module specific variables at the start of sim­ulation. Initial conditions for water levels or water depths and discharge are for example required for hydrodynamic river module simulations.

The initial conditions may be specified from three different options:

·         Steady state (specific for the Hydrodynamic module)

·         User-defined values for state variable

·         Hotstart files (use of existing result file from a previous simulation)

Initial conditions can be defined by a combination of user defined values and Hotstart files. In case both options are selected, the prioritization is as follows:

·         Priority 1: Hotstart files

·         Priority 2: User-defined initial conditions

Values from the Hotstart file are used where available, but where computa­tional points are not included in the Hotstart file, user-defined values are auto­matically applied.