CFD Online URL
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

A question about boundary condition??

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   June 21, 2011, 22:13
Default A question about boundary condition??
  #1
Member
 
lfgmarc's Avatar
 
Luis Felipe Gutierrez Marcantoni
Join Date: Oct 2010
Location: Cordoba-Argentina
Posts: 45
Rep Power: 6
lfgmarc is on a distinguished road
Send a message via MSN to lfgmarc
Hi, I trying to setup a case, in which I need that the inlet pressure changing according to the value of the outlet pressure. any suggestion ?

Best Regards, and thanks for your help

fg
__________________
Felipe G
lfgmarc is offline   Reply With Quote

Old   June 22, 2011, 18:08
Default
  #2
Member
 
Walter Schostak
Join Date: May 2011
Posts: 35
Rep Power: 5
wschosta is on a distinguished road
one possible solution is as follows:

if your inlet condition needs to be the same as your outlet you could make the walls at your inlet and outlet cyclic (periodic) which would basically mean that anything going out the outlet would come back in through the inlet. The problem with that is it also preserves any funky things going on with your fluid. And because the pressure is changing I'm guessing some funky things are happening.

that said I've tried my own interesting wall conditions and you might want to look at swak4foam, it was recommended to me while I was on my quest. It's an additional library that allows you to use equations for the boundary conditions. I didn't end up using it so I don't really know much more about it besides that.

best of luck!

Walter
wschosta is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
velocity profile inlet boundary condition question Lcw FLUENT 3 August 3, 2012 06:53
question about OpenFoam-temperatureGradient boundary condition gulru OpenFOAM 2 March 24, 2011 13:50
a simple Boundary condition question prapanj OpenFOAM Running, Solving & CFD 1 March 16, 2009 09:51
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 05:15
The Boundary Condition about the Flat Plate boing Main CFD Forum 1 January 6, 2002 17:53


All times are GMT -4. The time now is 02:22.