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Scalar shear stress expression

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Old   November 29, 2013, 15:59
Default Scalar shear stress expression
Mohamad Alagheband
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I need to define an expression for calculating scalar shear stress on a rotating impeller.
I have to specify all six component of the stress tensor in this expression.
but I can specify 3 component ,I mean wall shear X,Y and Z.
how can i define zx,zy and xy component?
thanks for any response.
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Old   November 30, 2013, 05:38
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Glenn Horrocks
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The usual definition is the sigma(xx)/(yy)/(zz) are the normal stresses and these are calculated from the pressure. The cross terms sigma(xy) are the tangential stresses which are from the wall shear stress.
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Old   April 27, 2014, 10:32
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I have a problem. a cant expression shear stress and normal stress at cfd-post by polyflow solver, and velocity gradient at 3 narrow please help me?
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