The Flow Injector, one of the water supply source components available for the Water Distribution network in a DEW model, attaches to one or more fluid circuits providing water supply for downstream circuit components. All other types of components in the DEW model (except for other sources) must have a trace path back to at least one water supply source.
The Flow Injector is used in DEW to define a known volumetric flow rate
boundary condition (in gallons per minute). The
typical usage for this component is to model a known (e.g. metered) water
supply into the system from a source (e.g. reservoir, municipal supply,
etc) that is essentially an infinite source independent of the modeled
system hydraulics.
Note: Centrifugal Pumps are used
to specify known system operating pressure conditions, see Pump component topic
for more details.
See General Dialog Details for information on common dialog fields and commands, as only the highlighted fields and commands unique to the Flow Injector dialog (shown below) are addressed in this topic.
Vol Flow Rate [___] gpm - sets the local volumetric flow rate (in gallons per minute) occurring at the represented location. The value entered in the dialog is used when measurements are not available. If measurements (i.e. from SCADA) are available, they will override the value entered in the dialog.
Z: [___] - this is defined to be the topographic elevation (feet above sea level) for the represented location, i.e. at ground level. This value is important for calculating the resulting pressure (hydraulic head) with the defined flow at the specified location.