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-   -   How to Set Pressured Outlet Boundary Condition? (http://www.cfd-online.com/Forums/fluent/120855-how-set-pressured-outlet-boundary-condition.html)

CFDisFUN July 16, 2013 08:45

How to Set Pressured Outlet Boundary Condition?
 
Hello,

I am trying to model a portion of a pump-driven flow in a pipe and I am not sure about its BCs. I set the Velocity Inlet for the inlet with a specific fluid velocity. For the outlet, I can choose "Pressure Outlet" BC, but it also ask for a temperature that I am not sure.

Can anyone advise on BCs of pumped flow (so the outlet is not zero pressure)!
Thank You.

Jim87 July 16, 2013 12:09

In my opinion the temperature of the pressure outlet for an continous system isn't that important. The fluid flows out of your system and the heat-transport against your flow direction isn't significant.

In order to avoid bad residuals I usually choose the inlet temperature or the reference temperatur.

Actually I can't remember a tutorial case where the outlet temperature where really important for the results.

CFDisFUN July 16, 2013 12:18

Jim87, Thanks a lot!


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