Is it possible to model a fixed flow VSP where the flow changes over time?

Product(s): WaterGEMS, WaterCAD, SewerCAD
Version(s): CONNECT Edition V8i
Area: Modeling

Problem

Is it possible to model a fixed flow variable speed pump where the flow changes over time? For example a logical control to change the target flow.

Solution

As of version 10.03.02.75,  there is currently not a direct way of doing this at this time. There are a few options that are available to you. First, you could model this as a pattern-based variable speed pump instead. This would require trial and error to determine the pump speed that results in the desired fixed flow.

A simpler solution would be to omit the pump altogether and model the flow from the pump as an inflow node. This is basically using a junction with a negative demand. The negative demand can follow a pattern, which would allow you to control the flow going into the system. 

  • Created by Bentley Colleague
  • When: Fri, Jul 21 2017 3:35 PM
  • Last revision by Bentley Colleague
  • When: Fri, Jan 15 2021 2:42 PM
  • Revisions: 3
  • Comments: 0
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