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-   -   wallShearStress gives opposite sign (http://www.cfd-online.com/Forums/openfoam-post-processing/111574-wallshearstress-gives-opposite-sign.html)

adamsinan January 10, 2013 05:47

wallShearStress gives opposite sign
 
Hi all,

I'm simulating a flow around a structure on a rigid bed.
When I used
"wallShearStress"
I got results, which agree very well with what expected, BUT they are in opposite sign !!?
so, when multiplying by (-1), the results are correct.

Could you give me any hint?

Re=4*10e4
k-epsilon & k-omega-sst
wall functions

Thanks in advance.


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