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no convergence with pressure outlet BC

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Old   June 6, 2006, 04:05
Default no convergence with pressure outlet BC
Ralf Schmidt
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I have a simple geometry (turbulend flow over a plate, 2D, incompressible) and I can NOT achieve convergence! I have a

- pressure outlet BC at the top of my domain and at the right side, and a

- vel. inlet BC at the left side (the plate is at the bottom).

look at

When I use wall-BC at the top, everything is fine... But the results are wrong (a pressure gradient will appear).

What settings are appropiate for the seggregated solver?? what urf, what coupling and what discretisation should I use???

Any help is highly appreciated!

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Old   June 6, 2006, 04:26
Default Re: no convergence with pressure outlet BC
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i think you want to simulate FLOW OVER A FLAT PLATE.

on top i think you can use symmetry or wall ( with no-slip) condition.

i hope this will help you.

bye san
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Old   June 6, 2006, 07:46
Default Re: no convergence with pressure outlet BC
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Consult a problem discussed in Anderson's book.
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