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Old   July 11, 2013, 06:51
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Tobias Holzmann
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Hi all,

I made a comparrison of some schemes:

http://holzmann-cfd.de/index.php/numerische-schemen
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Old   July 11, 2013, 08:39
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Great job Tobi! I did something similar for OSCIC'11 conference (see https://docs.google.com/file/d/0BzCp...it?usp=sharing). What I planned to try but still didn't implement it is a mesh dependency of the results:

1. Use unstructured grid
2. Vary an angle of your step profile on structured grid

Would be great if some one tests that))))
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Old   July 11, 2013, 12:34
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Hi,

nice hints! If I have time I would do it
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Old   August 12, 2013, 13:47
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Quote:
Originally Posted by alberto View Post
Check your local (cell) Peclet number. The linear scheme requires it to be less than 2 (see Ferziger and Peric for a reference).

In your application you might want to use limitedLinear or linearUpwind anyway, which ensure the boundness of the solution.

Best,
Dear alberto,
my Pe number is too high, what should i do to reduce it?
what scheme should we use because you said, linear schemes need Pe number lower that 2,
Time = 2000
Reading phi
Calculating Pe
Selecting incompressible transport model Newtonian
Selecting RAS turbulence model SpalartAllmaras
SpalartAllmarasCoeffs
{
sigmaNut 0.66666;
kappa 0.41;
Cb1 0.1355;
Cb2 0.622;
Cw2 0.3;
Cw3 2;
Cv1 7.1;
Cv2 5;
}

Pe max : 309910

End

can you give me some guidance,
Thank you very much.
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