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View Full Version : Supply/Demand discrepancy



sforrester
January 20, 2014, 07:56 AM
I am working on a model where I am using a perched reservoir to simulate a pump station outputting at a constant pressure. The total demand from the junctions in the model is around 6,000 gpm at a steady-state, yet the reservoir is outputting ~9,000 gpm into the system. Is there a reason it is trying to force 3,000 more gpm of water that isn't being demanded? I believe this extra water is leading to higher dynamic losses throughout the system and decreasing pressures.

Thank you,
Scott

Shawn Huang
January 24, 2014, 01:40 PM
A tank or another reservoir could accept the extra flow.