2 replies to this topic

[Yogesh Bhatt]

Dear All,

 

I am to perform a surge analysis for a diesel pipeline using AFT Fathom. My internet search tells me that it can be performed using AFT Impulse but since its not available I am doing it with AFT Fathom.

 

I am trying to close the valve and check the pressure profile but the problem is I am not able to close the valve. I tried giving valve open percentage = 0% but it doesn't converge.

 

Can anybody guide me the correct procedure to do it.

 

Thanks

[PaoloPemi]

as far as I know with Fathom you need

an additional module to simulate transients,

these are solved by direct integration

not solving PDE via method of characteristics

as in Impulse

[eraque]

AFT Fathom doesn't really do "Surge Analysis". The so called "transient module" is acutally quasi steady state at each computational step. Use AFT Impulse instead.