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Atmospheric boundary like 'Opening' in CFX

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Old   February 16, 2015, 15:35
Default Atmospheric boundary like 'Opening' in CFX
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Sangwoo Kim
Join Date: Jul 2014
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Hi all.
I have used ansys, and now I'm nearly new to STARCCM.

When modeling external flow, there is 'opening' boundary condition in ansys CFX which is treated as an atmosphere.

Is there something similar in STARCCM?
Should I just make a big region and use wall boundary?
How about using pressure outlet at all surroundings? It may warn that reversed flow occurs in somewhere, but it is physically true.. Actually I tried this, but residual went to about 100(10000%)(Of course it may be because of something else)

I searched couple of times, but I couldn't get clear answer.

Thank you.
Best regards
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