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boundary condition inlet equal outlet

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Old   June 29, 2009, 08:23
Default boundary condition inlet equal outlet
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pinho
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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
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Old   June 29, 2009, 09:57
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Ling
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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.
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Old   July 1, 2009, 08:58
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Rami Ben-Zvi
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If correctly understood, you are describing a periodic BC.
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Old   July 1, 2009, 09:34
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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
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Old   July 1, 2009, 09:50
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I guess you will have to cut a thin slice out of the domain.
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Originally Posted by jpinho View Post
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
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Old   July 1, 2009, 10:19
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pinho
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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...)

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Old   July 2, 2009, 10:09
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UDF? idk either
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