Gauge or operating pressure ?
 

Hi, i'm modeling a flow in a pipe and I've to set the initial velocity at the inlet. But what type of pressure ? 0 in operating pressure and 101325 Pa in gauge pressure or 0 in gauge e 101325 in operating ?
Thanks

Hi
U mean what pressure at the outlet condition???
101 325 at opertaing so 0 at gauge on the outlet.

I've read that Fluent use absolute pressure=operating pressure+gauge pressure. So i wanna know what pressure set and what put 0

wanna put a pressure where?????????????????? on a pressure outlet?????????????????
if u discharge at atmoshperic, put operating =101 325 and gauge = 0

No, in the operating conditions !

in the operating conditions u just choose the operating pressure.
Gauge pressure is chosen for a specified location