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wallShearStress gives opposite sign

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Old   January 10, 2013, 05:47
Default wallShearStress gives opposite sign
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Hi all,

I'm simulating a flow around a structure on a rigid bed.
When I used
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?

k-epsilon & k-omega-sst
wall functions

Thanks in advance.
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