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  1. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    Thank you georgeverghese for you're ansewers!! Actually it didn't exceed the design pressure but the supports are not able to handle the generated forces as you said!.. umm i don't know how to modelize the PIC - PCV loop on the software.. gerhardl: because on AFT, vacuum breaker valve acts as a...
  2. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    I want to clarify that i have a real problem of water hammer in this line. This is just a little part of the real problem..
  3. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    If this bubbles exist now, i guess they will exist during water flow too. I want to evaluate the loads generated by water hammer (and amplified by these bubbles) and see their effects on the pipeline by Caesar Software..
  4. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    LittleInch: 2321 meters is the lengh of the pipe P1 only.(between valves).. Yeah that's why the software refuses to model the transient event with cavitation model before resolving this problem in the steady state. pennpiper : i'm sorry..this line is not pigged because it's just a flush line...
  5. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    Hi, Thank you so much for your ansewrs. LittleInch: Actually i'm trying to resolve the problem at steady state "NO FLOW IN THE LINE: valve closed". Unfortunatly , there is vapor at this point. The end point is a Tank. pennpiper: the line is 36 inch , P1 is 2321 meters, the difference between the...
  6. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    I'm using AFT impulse, and i have pipline with no flow initially (valve closed). I have notification that vapor exists in this pipeline in steady state and so i cannot move to the transient analysis.what can i do? I tried to use vacuum breaker valve baut it doesn't work...
  7. bsteel

    How to evacuate vapor from a pipline which is not full initially. AFT impulse

    thread408-218554 Hello, I'm using AFT impulse for water hammer analysis. i have a pipline with no flow initially (valve closed)and i have notification that vapor exists in this pipeline in steady state and so, i cannot move to the transient analysis...what can i do? This is what it look like...

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