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Opening boundary condition

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Old   May 10, 2012, 11:10
Default Opening boundary condition
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Elias Paez
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Hi all,

My question is quite simple:
Is there an "Opening" BC in Fluent like in CFX? Because, I usually use the "pressure_outlet" to achive this condition (gauge pressure=0), but I'm not really sure if it is a correct solution.

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Old   May 11, 2012, 02:21
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The Opening BC in CFX is also a pressure outlet BC. Only difference is that it allows a reversed flow and does not close off faces which encounter a reversed flow (like the pressure outlet BC does in CFX)

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Luke
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Old   May 11, 2012, 06:18
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Elias Paez
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Thanks Luke,

And, do you know if it exist a big difference between use pressure inlet or pressure outlet in this case?, because i saw people in the forum using pressure inlet, and i think it is not a good solution.
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Old   May 11, 2012, 06:46
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In which case? What are you trying to analyse?
In most cases a pressure inlet with a pressure outlet is the most stable BC combo

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Luke
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