Bentley WaterGEMS CONNECT Edition Help

Demand Tab

The Demand tab allows you to select the demand adjustment groups (which were defined in the Calibration Study) and the parameters to use during the optimized run.

The Demand tab consists of a table containing the following columns:

  • Demand Adjustment Group - Displays the name of the demand adjustment group.
  • Is Active? - If this box is checked, the associated adjustment group will be considered during calibration. If the box is cleared, it will be ignored.
  • Operation - Select the operation you want the calibration to perform.
  • Minimum Demand Multiplier - Enter the minimum demand multiplier that you want the genetic algorithm to use as a lower boundary when calculating fitness solutions. This field will only be editable for Multiply Original Demand Operations.
  • Maximum Demand Multiplier - Enter the maximum demand multiplier that you want the genetic algorithm to use as an upper boundary when calculating fitness solutions. This field will only be editable for Multiply Original Demand Operations.
  • Demand Multiplier Increment - Set the increment as the demand multiplier intervals at which you want the GA to test. Try to choose an increment that gives the least number of possible alternatives. You may need to decrease the range between your upper and lower limits to do this. This field will only be editable for Multiply Original Demand Operations.
  • Minimum Emitter Coefficient - Enter the minimum emitter coefficient that you want the genetic algorithm to use as a lower boundary when calculating fitness solutions. This field will only be editable for Set Emitter Coefficient and Detect Leakage Node Operations.
  • Maximum Emitter Coefficient - Enter the maximum emitter coefficient that you want the genetic algorithm to use as an upper boundary when calculating fitness solutions. This field will only be editable for Set Emitter Coefficient and Detect Leakage Node Operations.
  • Emitter Coefficient Increment - Set the increment as the emitter coefficient intervals at which you want the GA to test. Try to choose an increment that gives the least number of possible alternatives. You may need to decrease the range between your upper and lower limits to do this. This field will only be editable for Set Emitter Coefficient and Detect Leakage Node Operations.
  • Number of Leakage Nodes - The maximum number of leakage nodes possible for the demand group when calculating fitness solutions. This field will only be editable for Detect Leakage Node Operations.