• Modeling pump startup against a closed valve in HAMMER

    We are trying to model a pump startup scenario in HAMMER (v 8.11.03.17) with the pump starting 10 seconds into the simulation and the discharge valve starting to open up 15 seconds into the simulation. We followed the Tech Note for startup scenario but…
  • Modeling Valve closure in Hammer

    Hi, I am modeling a HDPE treated water pumping main to see the effects of a pump trip and a valve closure (at the end). I am planning on using a altitue valve and it is supposed to close when the tank is full and also another motor operated valve to…
  • Control valve response to transient event

    Is there a way to model the response of a control valve to a transient event beyond manually inputting the transient operational pattern? An example would be what happens to a PSV when the transient pressure drops below the pressure set point.