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Different results with different Boundary conditions |
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June 3, 2009, 08:40 |
Different results with different Boundary conditions
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#1 |
New Member
Ravi Kapoor
Join Date: May 2009
Posts: 6
Rep Power: 17 |
Hi,
I am simulating a single phase laminar flow in a pipe in 3d geometry. When I put the inlet condition as pressure condition, I get an error of 15%(for Re=500), when compared with the analytical solution. The error increases with increase in Reynold's number . But when I put the inlet condition as velocity inlet(corresponding to Re or pressure drop), I get an error of just <1% (accurate result). Can you tell me what there is so much difference in results with slight change in the defination of boundary conditions. |
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Tags |
boundary condition, error, laminar, pipe, result change |
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