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Old   April 28, 2010, 11:23
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shoushibo
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the flow of liquid on structured wall is treated. from the plot of velocity vector, the eddy near the wall appeared. but i want to verify it from the wall shear stress. the plot of wall shear stress v.s. wall is made. but all the stress is positive. i think some of these should be negative. why?
and how can i get the velocity gradient normal to the wall?
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Old   May 7, 2010, 11:27
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anyone can offered some suggestions?
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Old   May 8, 2010, 07:01
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Only the magnitude of the wall shear stress shown here, directional information can be obtained from the components of the wall shear stress included as well. Good lcuk
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Old   May 8, 2010, 09:41
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thanks for your reply. how to calculate the wall shear stress in fluent? is this the magnitude of this vector?
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Old   May 8, 2010, 15:10
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Wall shear stress can be found under Wall fluxes or something, good luck.
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Old   May 9, 2010, 10:33
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i know the position of wall shear stress. but do not know how to calculate it in fluent. please give some explanations.
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