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non-real values on output BC-whats the limit of output pressure?

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Old   July 1, 2013, 16:42
Default non-real values on output BC-whats the limit of output pressure?
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Ehsan
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whats incorrect in this case?
it seems there is a limit on output pressure that below that solution gives non correct solution on the outlet mainly on neighbors.
the tube is filled by a high pressure fluid(1800000 I used here) and opening has a lower pressure.it seems where this pressure on BC goes lower than a value it gives improper results(internalField values shouldn't be lower than the boundary)but I don't know whats this pressure limit.
has had anyone of CFD fans! such an experience or have knowledge about?(maybe a gasdynamic rule there is for it)
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Last edited by immortality; July 1, 2013 at 17:58.
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