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-   -   Sampling Reynolds Stresses (http://www.cfd-online.com/Forums/openfoam/66187-sampling-reynolds-stresses.html)

sven July 8, 2009 11:00

Sampling Reynolds Stresses
 
I ran a turbulent channel flow calculation and now I want to sample the obtained Reynolds Stress Tensor R with the post processing sample tool. However the tool does not work if I put a capital R (for Reynolds Stresses) in the fields part of the sampledict file:

Code:

fields
(
    U
    R
);

Has anyone succeded in doing this? What do I have to do to apply the samples tool on R? Thanks a lot

fs82 July 10, 2009 04:42

Try to sample UPrime2Mean instead of R.

leonardo.morita July 10, 2009 07:42

I had problems with sampling UPrime2Mean too and I was suggested to firstly get UPrime2Mean components (foamCalc components UPrime2Mean) and then apply sample to each component separately.

fs82 July 13, 2009 06:45

The UprimeToMean field is a symmetric tensor field and this fieldtype is really tricky. The foamToTecplot converter ignores it too. But with the foamCalc you can split the symmetric tensor field into its componets UprimeToMeanxx, UprimeToMeanyy, UprimeToMeanzz ... This should work :-D

salahudeen March 1, 2012 17:15

reynolds stress
 
sir , whether uprime2mean and reynolds stress is same??


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