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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
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
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
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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