boundary condition inlet equal outlet

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 June 29, 2009, 08:23 boundary condition inlet equal outlet #1 New Member   pinho Join Date: May 2009 Posts: 22 Rep Power: 9 hello everyone, i would like to know it it is possible to define a boundary condition as pressure outlet which will be the velocity inlet condition. Basically both boundaries are exactly the same. this would be interesting to simulate closed circuits. any suggestion? thanks jpinho

 June 29, 2009, 09:57 #2 New Member   Ling Join Date: Jun 2009 Posts: 25 Rep Power: 9 I was thinking exactly the same thing but never got chance to try it. I doubt it's gonna work. Please tell me more when you find something interesting.

 July 1, 2009, 08:58 #3 Senior Member   Rami Ben-Zvi Join Date: Mar 2009 Posts: 148 Rep Power: 9 If correctly understood, you are describing a periodic BC.

 July 1, 2009, 09:34 #4 New Member   pinho Join Date: May 2009 Posts: 22 Rep Power: 9 rami, thanks for your reply.. not exactly.. i was thinking to simulate a complete closed cycle.. like a thermodynamic one rankine or joule-brighton.. my question is.. if i have a closed geometry how can i set up boundary conditions for the flow? kind regards jpinho

July 1, 2009, 09:50
#5
New Member

Ling
Join Date: Jun 2009
Posts: 25
Rep Power: 9
I guess you will have to cut a thin slice out of the domain.
Quote:
 Originally Posted by jpinho rami, thanks for your reply.. not exactly.. i was thinking to simulate a complete closed cycle.. like a thermodynamic one rankine or joule-brighton.. my question is.. if i have a closed geometry how can i set up boundary conditions for the flow? kind regards jpinho

 July 1, 2009, 10:19 #6 New Member   pinho Join Date: May 2009 Posts: 22 Rep Power: 9 ok.. i agree.. and what about the boundary conditions?? how can you set that the inlet and outlet are the same boundaries?? (this was my initial question...) jpinho

 July 2, 2009, 10:09 #7 New Member   Ling Join Date: Jun 2009 Posts: 25 Rep Power: 9 UDF? idk either

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