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September 2, 2013, 02:07
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boundary condition
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#1 |
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New Member
UMP
Join Date: Sep 2013
Posts: 1
Rep Power: 0  |
hi Guys:
i have question about boundary condition at the exit flow pipe on Gambit? what is the difference between pressure outlet and outflow? TQ |
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September 2, 2013, 13:39
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#2 |
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Member
Ramesh K
Join Date: Dec 2009
Location: Bangalore
Posts: 73
Rep Power: 16  |
As I understood about outlet and outflow is based on what kind of flow you are looking at , internal flow or external flow. If internal flow it is outlet condition, for external flow it is out flow condition.
Correct me if I am wrong. Thank you |
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September 2, 2013, 16:37
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#3 |
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Senior Member
Lefteris
Join Date: Oct 2011
Location: UK
Posts: 337
Rep Power: 15 |
When you set pressure outlet boundary condition, the flowfield is determined by the pressure difference between the inlet and the outlet.
When you set outflow boundary condition, the variables are extrapolated to the boundary from the interior nodes and you have zero gradient at the boundary
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Lefteris |
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