|July 26, 2012, 16:30||
Question about boundary condition setting for a specific case
Join Date: Feb 2011
Posts: 118Rep Power: 4
Thanks for your time to look at this email. I'm working on the CFD of a pipe. My work is to know the pressure drop of a section of it by CFX. I only know the inlet velocity of that section. May I ask what boundary condition should I set to the outlet surface? Since there's pressure drop, should I still set the outlet boundary condition to 'relative pressure = 1' as to the other places?
I'm looking forward to your answer.
Best regards and many thanks,
|July 26, 2012, 16:57||
Join Date: Apr 2012
Posts: 76Rep Power: 3
I believe this relative pressure is related to the reference you set at the Default Domain.
Have you tried the Relative Pressure = 0? You need a lower value at the outlet so the flow can occur as far as I know, but correct me if I'm wrong.
What you can do is mess a little bit with the conditions and always monitor the pressure at the outlet using CFD-Post tables to see if it's coherent to the reality... ave(Pressure)@Outlet should do the job.
The pipe walls should be no slip ones right?
|Thread||Thread Starter||Forum||Replies||Last Post|
|Setting outlet Pressure boundary condition using CAFFA code||Mukund Pondkule||Main CFD Forum||0||March 16, 2011 05:23|
|Question about rmap and automap and boundary condition||ubald||OpenFOAM||0||November 1, 2010 15:51|
|vorticity boundary condition||bearcharge||Main CFD Forum||0||May 14, 2010 12:32|
|RPM in Wind Turbine||Pankaj||CFX||9||November 23, 2009 05:05|
|Interesting Question on Boundary Condition||Rajeev Kumar Singh||FLUENT||5||October 26, 2005 06:23|