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Old   October 10, 2010, 16:39
Question 3 Questions about B.C
  #1
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Hi all,
Three questions about B.C:

1-What does it mean? (in bouyantPimpleFoam):
Code:
    outlet          
    ground
    {
        type            buoyantPressure;
        rho             rhok;
        value           uniform 0;
    }
2- what does it mean? (in pisoFoam):
Code:
    outlet          
    {
        type            inletOutlet;
        inletValue      uniform (0 0 0);
        value           uniform (0 0 0);
    }
3- As you know we need to define only one of P and U in boundaries but we must define something in OF for all parameters. so if we define pressure for example as fixed value what should be defined for U?

Thanks in advances,
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Old   October 11, 2010, 04:43
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Hi maysmech,
according to the userguide is the BC "inletoutlet" and I quote >>
Switches U and p between fixedValue and zeroGradient depending on direction of U inletValue, value. << I hope this helps you somehow
For the "buoyant" BC i really don't know how it works..
Greats
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Old   October 20, 2010, 03:57
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Thanks for your reply,
i don't know which B.C type should be used for U, when we set pressure as fixedValue and U is not fully developed to use zeroGradient.
Best,
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