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Hi I'm vishal How does the tank supply the demand when it is more than the capacity of the tank?

I'm running steady state and demands are more than tanks capacity, I mean how the Demand is met if capacity of tank is less than demands?

Parents Reply
  • Vishal, the model solves around the assumed boundary conditions and demands. The elevation of the junctions only allow the pressure to be calculated. For example if there is a local high point, the energy balance does not know that more head needs to be added to overcome that elevation, with potential part-full flow if an air valve is open. See more details on that here.

    In your case water will flow out of the tank based on any assumed demands you have entered downstream, or assumed hydraulic grade you have defined at reservoirs or other tanks, and the model solves the energy balance around that. In your case you would see a negative pressure reported at the junction whose HGL is below the node physical elevation. More details on that can be found in this Wiki article:

    Troubleshooting negative pressures at pumps, junctions, & other node elements

    What this tells you is that the real system may not be able to operate and that you must change something in order to resolve the problem.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.

    Answer Verified By: Vishal Cn 

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