startup modeling
startup modeling
(OP)
Dear friends,
How can I model startup in CAESAR II?
How can I model startup in CAESAR II?
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RE: startup modeling
What do you want to include in your analysis other than the many combinations of pressures temperatures and other loads that Caesar II already offers ?
RE: startup modeling
RE: startup modeling
RE: startup modeling
RE: startup modeling
Do you know how I can model spartup in CAESAR II?
RE: startup modeling
However, if you are thinking about water hammer / slug flow, you need to find reliable load / time data for your piping system. Assuming that data exists, then decide whether it is in any way cyclic or resonant. That will guide you towards response spectrum or time history analysis methods.
RE: startup modeling
Thanks for your replies
RE: startup modeling
Unless there is a true slug of liquid involved, all momentum effects of 'starting to flow' are self cancelling and should result in no external loads, assuming that there are no unrestrained expansion joints employed.
In my view, initiation of flow due to pump operation simply is not an instantateous load, rather it's a ramp up, so the (2x DAF) does not apply.
RE: startup modeling
Thank you very much. We were working on a plant that a elbow failed during startup. Before your recent comment, I was thinking that force of startup(2*DLF)caused this failure.
Thanks again.
Sincerely,