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turbulent channel Flow - simpleFoam

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Old   July 28, 2010, 08:16
Default turbulent channel Flow - simpleFoam
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Michel
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Hello Foamers,

I want to compare the result of turbulent and laminar channelflow from Fluent and OF.
Im using the simpleFoam-solver and the resulats of the laminar flow are looking fine.

Now i just want to run the same case with higher Re. So i just copied the case, calculated k and epsilon link in the OF User Guide and started the case.

The results seems to be wrong: e.g. the inlet velocity is set to 7.5cm/s, but v_max is just like 7.5432 cm/s. That seems quite strange to me...

I attached the case, it would be great if someone could help me..

Thanks a lot, have a good day..

Michel
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Last edited by Michel_HB; July 28, 2010 at 10:03.
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Old   August 2, 2010, 19:54
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Naveen
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HelloMichel,

I am no expert in this but there is an example in the Programmer's guide to carry out a turbulent flow analysis in backward facing step using simplefoam, did you go through this?

How did you get the laminar results? did you use simplefoam?

Thank you
Naveen
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Old   August 6, 2010, 02:07
Question BFS is steady state or transient
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simpleFoam is steady state and pisoFoam is transient.
Is it possible that turbulent backward facing step be steady state?
i saw pitzDily which is same as a BFS in pisoFoam tuturial.
please tell me how can a turbulent flow in BFS with its deifferent eddies can be steady satate?
Thanks.
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