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wall shear stress at microchannel wall

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Old   November 26, 2017, 16:43
Unhappy wall shear stress at microchannel wall
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omid mohammadi
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hi
i have a problem about microchannel shear stress calculating.
please help me.
i have a microchannel with 90degree elbow that the fluid is air.\
i want to investigate slip condition. at fluent, boundary part for wall, it wants me shear stress for x,y and z. but i cant find how to calculate it.or is there somewhere at fluent that i can calculate from there?
please help me.
thanks a lot
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