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Is there a software that couples p and U?

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Old   October 4, 2012, 10:58
Default Is there a software that couples p and U?
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Samuele Z
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Hi all,

I am facing an interesting problem and I can't get convergence.

I think that the problem is in the numerical resolution. I would need a scheme that couples p and U.

Is there such a scheme in OF?

Thanks a lot,
Samuele
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Old   October 6, 2012, 06:52
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ata kamyabi
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Hi
Do you really mean scheme? or coupling algorithm?
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Old   October 8, 2012, 04:22
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Let's say coupling algorithm!
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Old   October 8, 2012, 05:25
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Hi
I am confused what really you want but there is SIMPLE, PISO and ... algorithms in OF.
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Old   October 8, 2012, 05:27
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Yes,

I know.

But AFAIK, both simple and piso solved the P field first and then the U field, is that correct. I know that in fluent there is a solver which solved the U and P field together at each iteration.
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Old   October 8, 2012, 05:30
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Hi
Now I understand you. Is your problem compressible or weakly compressible?
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Old   October 8, 2012, 05:32
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Ok.
Sorry, I didn't explain the problem well.

Anyway, my problem is compressible
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Old   October 8, 2012, 05:38
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Oh!
As I know unfortunately there is not such solver in OF.
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Old   October 8, 2012, 06:12
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And do you have any suggestion for a weak-compressible problem?
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Old   October 9, 2012, 06:48
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Hi
Not specific offer just using a compressible equation of state and setting Match number low to be weakly compressible.
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Old   October 9, 2012, 07:21
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OpenFOAM extend offers a block-coupled solution strategy. Unfortunately, that's all I know about it Google block-coupled-matrix...
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Old   October 9, 2012, 10:32
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Thanks.
I'll google it as soon as possible.

Samuele
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