Multiple choice

The flow of water (mass density = 1000 kg/m3 and kinematic viscosity = 10-6 m2/s) in a commercial pipe, having equivalent roughness ks as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m2 . The value of ks / $\delta$ ($\delta$ being the thickness of aminar sub-layer) for this pipe is

  1. 0.25

  2. 0.50

  3. 6.0

  4. 8.0
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 

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