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Boyan Borisov

Boyan Borisov

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  • RE: Time history for the hydropneumatic tank

    Scott Kampa
    Scott Kampa
    Hello Boyan, You can create these from the Transient Results Viewer. There is a Time History tab. You will need to include report points for elements in your model. This is done in the transient calculation options. You have options to include all elements…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Time history for the hydropneumatic tank

    Jesse Dringoli
    Jesse Dringoli
    Boyan Borisov said: Which volume is given in the second column on Figure 2 and 3, after calculation based on initial conditions? It is the volume of gas in the tank - when the tank is connected to the system and subjected to system pressure, the gas…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Time history for the hydropneumatic tank

    Jesse Dringoli
    Jesse Dringoli
    Hi Boyan, Your tank is set to use a bladder (has bladder = true) in which case HAMMER assumes that the pressure inside the full bladder is equal to the "preset pressure" (98 Kpa in your case) before the tank is installed and subjecting the tank to pipeline…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Which is alternative for orifices of air valves

    Scott Kampa
    Scott Kampa
    Hello Boyan, Assuming you are using HAMMER, this information is stored in the Transient alternative. You can create two of Transient alternative with two different air valve settings for two scenarios. You can find more information on managing scenarios…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • RE: Pipe fills tank modeled like reservoir from top and shows vacuum in Hammer simulation?

    Jesse Dringoli
    Jesse Dringoli
    Hi Boyan, Can you clarify what you mean by "emitter node"? Do you mean a junction with an emitter coefficient? If so, HAMMER treats this situation the same as a regular demand node during the transient simulation - it sees the initial pressure and outflow…
    • over 2 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
  • about measurement units of parameters in formula for specific energy of a pump

    Boyan Borisov
    Boyan Borisov
    Dear colleagues, I've check several sources about the formula of specific energy for the pumps. According most of them in the formula the rotational speed is in revolutions per minute. rpm But in the help documents of Hammer the rotational speed…
    • Answered
    • over 7 years ago
    • OpenFlows | Water Infrastructure
    • OpenFlows | Water Infrastructure Forum
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