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  1. oilman11

    Orifice Sizing Equations

    Thanks guys
  2. oilman11

    Orifice Sizing Equations

    Hi all, Can someone guide me to a reliable technical resource that has equations for calculating temporary pressure loss, permanent pressure loss, max velocity across an orifice? I’ve seen some equations in the past that take into account orifice details such as thickness, sharp edge etc but...
  3. oilman11

    Tank Recycle Hydraulics

    Thanks guys. This confirms my understanding of this problem.
  4. oilman11

    Tank Recycle Hydraulics

  5. oilman11

    Gas Injection Into Liquid Line

    If a higher pressure gas in introduced into one side of a pressurized pipe, would gas bubble through the liquid or displace the liquid? Assume the gas is at higher pressure than the liquid in the pipe and pipe is closed on the other end. Thanks
  6. oilman11

    Tank Recycle Hydraulics

    I have an interesting hypothetical hydraulics problem in order to better my understanding. Please refer to the attached diagram for clarity. Imagine a closed tank with a roof (not open to atmosphere). It has one inlet, one outlet, one recycle. Inlet line to the tank is through a centrifugal...
  7. oilman11

    Hydraulic Grade Line Analysis

    Thank you everyone! @LittleInch - Yes, that works and it does make sense.
  8. oilman11

    Hydraulic Grade Line Analysis

    Yes, you're right. It should be vertical line, that's my mistake. Yeah, it's a PD pump. Thanks for your input.
  9. oilman11

    Hydraulic Grade Line Analysis

    HGL increases on the LHS side because there is a pump there. Yes, the liquid will flow to match the end condition but if I am controlling the flow at a fixed flowrate, the flow will go to slack conditions to dissipate extra energy. Are you saying that slack will occurs at those two points...
  10. oilman11

    Hydraulic Grade Line Analysis

    The HGL has different slopes because the pipe diameter changes along the way. I have tried making the pipeline diameter smaller in some sections so that it would sort of act like a choke. Yes, the end point of HGL should match the pipeline elevation because it discharging at 1 atm. But... For...
  11. oilman11

    Hydraulic Grade Line Analysis

    Hi, I am looking to figure out where will the flow in the pipeline go from full pipe to slack flow in the attached image? Background: The attached image shows a tailings pipeline going down into a tailings pond. The end of the pipeline is at atmospheric pressure. Since the end point of the...
  12. oilman11

    Slack Flow Versus Siphon

    Appreciate the help everyone! This deifintely helped me clarify a lot of the confusions I had regarding slack flow and open channel flow.
  13. oilman11

    Slack Flow Versus Siphon

    Thank you for your input. This application is for a highly abrasive slurry and putting any sort of valve for creating back pressure will require significant maintenance. As mentioned above, I think putting in a smaller diameter pipe to create back pressure would be a better idea. One other...
  14. oilman11

    Slack Flow Versus Siphon

    Hello, First time posting here, apologies if question is unclear. I have spent hours searching the difference between operating in a slack flow vs in a siphon. Numerous sources say that when Hydraulic grade line (HGL) falls below the pipeline elevation, slack flow occurs. My question is...

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