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Forum: FLUENT

October 25, 2012, 09:01

Replies: 14

why in fluent report the skin friction coefficient is positive

Views: 8,702

Posted By gfoam

But in which reference frame the velocity...

But in which reference frame the velocity gradient is negative? May be FLUENT calculates the Cf with the absolute value of the wall shear, may be you must look at the components of wall shear and see...

Forum: FLUENT

October 25, 2012, 07:32

Replies: 14

why in fluent report the skin friction coefficient is positive

Views: 8,702

Posted By gfoam

Be careful, because the criterion of skin...

Be careful, because the criterion of skin friction (Cf) equals cero (not negative) to find flow separation only aplies when you have a 2D case like a 2D airfoil or a cylinder, but not in 3D cases...

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