Source and Sink

For each source

·         the discharge magnitude,

·         the speed and

·         the outlet direction

by which the water is discharged into the ambient water must be specified while for each sink only

·         the intake magnitude

is specified since sinks do not contribute to the momentum equation, only to the mass equation. For a connected source-sink pairs, the discharge magni­tude at the source equals the intake magnitude at the sink. Source/sink mag­nitudes (in m³/s) and source speed (in m/s) can either be given in a type 0 file (time series) or as constant values. The outlet direction is the horizontal direc­tion relative to true North and should be specified as a constant.

Evaporation and precipitation
Precipitation on dry land