Pipe burst and transient analisis 1

[Dario2002]

I lost 2 days searching for this on google, etc.


I need method, or better yet software for transient flow analisis for following problem;

Gasline with nautral gas (f.e. lenght 10 km, diameter 500 mm, pressure 30 bar). Gasline is broken is some point and loosing known flow (depending of hole size, f.e. 200 mm hole).

What is pressure drop through time at some other point?


I would prefer freeware solution, because is private investigation. I would like to answer some of those questions: can this pressure drop be good detection of pipeline break? What pressure drop should be used for this use?


Thank You for all inputs ..

 

[dcasto]

Exactly, It is a curve fit of the GPSA Data book. I added the generalized equation for Tc and Pc from another article. I have another more complex z factor that required 1 iteration and I used the previous direct to get the "seed" and it improves the first by less than 3%, but its upper pressure limit is over 1600 psia, so I don't use it in my spread sheets.