Not seeing changes to demands or status after exporting Darwin Designer run

  Applies To 
  Product(s): Bentley WaterCAD, WaterGEMS
  Environment:  N/A
  Area:  Modeling
  Original Author: Jesse Dringoli, Bentley Technical Support Group











I've used demand adjustments and boundary overrides in my Darwin Designer study, but when I export the results of the study to a scenario, I do not see the additional demand and the boundary overrides did not seem to apply (for example a pipe set to closed in Darwin still shows as open). Why does this happen?


The reason is because when you export the results of a Darwin Designer run, you currently only have the option of exporting Physical and Active Topology properties.  Demands are stored in the Demand alternative and status like a pipe being open or closed is stored in the Initial Settings alternative.

So, you will need to manually adjust the status, demands, etc after exporting the design results. This can be done through a number of different methods, including the property grid as well as Flextable and (for demands) the Demand Control Center under the Tools menu. If you wish to capture these changes only in the scenario in question while leaving the other scenarios intact, you'll need to first create and assign a new Demand alternative (for the additional demands) and Initial Settings alternative (for the status changes like pipe being closed) to the scenario in question.

Note: this is documented in the WaterCAD/WaterGEMS Help, under the section called "Export to Scenario" :

Note:  If you export a Designer solution to the scenario manager, the extra demand adjustments and boundary (initial) conditions aren't exported (only physical properties, active topology, and capital cost alternatives can be exported). Given this, to recreate simulation runs that are equivalent to each Design Event, it is necessary for you to build a corresponding demand and initial alternative that reflects any additional demand adjustments and any boundary conditions. 


See Also