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Pump Startup
HAMMER
pump operation
pump shut down
pump start
quadrantcurve
Transient
vsp type
Water Hammer
Pump Startup - VSP Type - Can you configure a pump to have multiple VSP types?
Jesse Ellis
Is it possible to configure a pump to have multiple VSP types? Ideally, we want to use the [Pattern Based] VSP Type up to a point and then switch to [Fixed Flow] VSP Type. If not, is there any workaround for the following real-life scenario? We…
Answered
2 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
[OpenFlows HAMMER] - Pumps in parallel failure scenarios
Julio Issao Kuwajima
Hi I want to analyze failure scenarios for 2 pumps in parallel in HAMMER. Therefore I´d like to ask how could I set the following scenarios: 1-) Sudden and simultaneous pumps Start-up (sudden change in flow). 2-) Sudden and simultaneous pumps…
over 2 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
HELP! HELP!! Why the pressure increased so much during pump stratup condition?
EE H
Hi guys. I have a very frustrating problems, i try a lot , and can not slove it . Wish any friend can help me.. a) It is a pump station with 3 on duty pumps. the rated flow of pump is 9.53m3/s and rated head is 75m. the topological structure is…
over 3 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Open operation (One Pump running and second pump starts 60 sec delay)
M. Shaik Abdul Kader
Dear Team, I have a scenario, in which one pump is running and seconds pumps start 60 sec later. I have not considered the pump tripping and i need know will there be any pressure variation during the starting of second pump. When i run the analysis…
over 3 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Hammer Pump Startup - Stabilised Flow Conditions
Jesse Dringoli
Hello, I assume you're using HAMMER V8i. Assuming no data input errors, there are several things that could cause this difference. For example: 1) If you have any valves (GPV, TCV, PBV, FCV, PRV, PSV) that are active in the initial conditions…
over 14 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Pump start simulation at Hammer v8XM
Jesse Dringoli
Under the main Haestad Methods product Technotes and FAQs page, check the "HAMMER V8 XM" section. You will see a similar Technote describing how to model a pump startup in V8 XM. Note that I recommend upgrading to V8i since the process is easier. …
over 14 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
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