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surge analysis of diesel oil, Gasoline & Liquid LPG networks using water hammer

in surge analysis, What is the  acceptable minimum pressure limit for Diesel oil, Gasoline & Liquid LPG ? can anyone help

  • Hello Sireesha,

    a better location for this question rather the sisNET-Forum would be on the Hydraulics and Hydrology Forum.

    I put it there for you:
    communities.bentley.com/.../133232

    I hope someone on there will be able to help you.

     Thanks,
     Andreas

  • Hi Sireesha,

    I have moved your question to the Haestad | Hydraulics and Hydrology Forum. I assume you are using Bentley HAMMER.

    The minimum acceptable pressure may be more a function of the pipe material and other factors, rather than the liquid. Though, the vapor pressure limit (pressure below which the liquid will change state to gas) may be different for your non-water fluid. A textbook or reference article may be available somewhere to determine the vapor pressure limit of your fluid.

    In HAMMER, you would account for the different liquid properties by way of the viscosity, specific gravity, etc set in the steady state/EPS calculation options, as well as the vapor pressure limit in the transient calculation options.

    For more on this and information on the implications of modeling non-water liquids in HAMMER, see this article in our wiki:

    Modeling fluids other than water

    Once the fluid is appropriately modeled, you would compare the resulting transient pressures with the "rating" of the pipe material to assess if the pressures are acceptable. In some cases a positive pressure is desired, to prevent issues with subatmospheric pressure such as contaminant intrusion at joints.


    Regards,

    Jesse Dringoli
    Technical Support Manager, OpenFlows
    Bentley Communities Site Administrator
    Bentley Systems, Inc.