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OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
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    • transients
    • inertia
    • HAMMER
    • Pump shutdown
    • Pumps
    • Turbine
    • v8i
    • Water Hammer
    • Re: Pump Inertia - relationship with pump failure & operational pattern

      Jesse Dringoli
      Jesse Dringoli
      I concur with Ben. With the "Shut after time delay" transient pump type, the applied torque instantly drops to zero at the time specified in the "time delay until shutdown" field. The impeller is then subject to deceleration based on the pump inertia…
      • over 13 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
    • Moment of Inertia Turbine Input - Hammer

      Matt Baird
      Matt Baird
      Hi I am trouble shooting a Hammer model of a hydro scheme which is producing unexpected results. I have some confusion around which inertia Hammer uses. For hydro generation applications inertia is usually given as WR2 or GD2, with GD2 being four times…
      • over 10 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
    • Re: Hammer calc error

      Jesse Dringoli
      Jesse Dringoli
      Velibor, You need to enter the pump inertia. This is needed for a shutdown event, so HAMMER can correctly compute how the pump spins down. It is not needed with a constant speed pump because the pump isn't changing speed. Regards, …
      • over 14 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
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