The pump curve specifies the relationship of flow through a pump link to the depth or volume at the upstream node, or to the head delivered by the pump.
Pumps are links used to lift water to higher elevations. A pump curve describes the relation between a pump's flow rate and conditions at its inlet and outlet nodes. Four different types of pump curves are supported.
An off-line pump with a wet well where flow increases incrementally with available wet well volume.
An in-line pump where flow increases incrementally with inlet node depth.
An in-line pump where flow varies continuously with head difference between the inlet and outlet nodes.
A variable speed in-line pump where flow varies continuously with inlet node depth.
The on/off status of pumps can be controlled dynamically through user-defined Control Rules. Rules can also be used to simulate variable speed drives that modulate pump flow.