Question

What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter 'D' & length 'L' incurring a pressure drop 'Δp' with average velocity 'Vₐᵥ'?

a.

D Δp/8L

b.

D Δp/4L

c.

8 . Vₐᵥ/D

d.

4 . Vₐᵥ/D

Answer: (c).8 . Vₐᵥ/D

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Q. What is the shear rate at the pipe wall, in case of laminar flow of Newtonion fluids in a pipe of diameter 'D' & length 'L' incurring a pressure drop 'Δp' with average velocity...

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