In a rough pipe of diameter 90 mm, the velocity of flow increases by 20% as the pitot tube is moved from a point 2.5 cm to a point 1 cm from the pipe wall. Determine the height of roughness. A pipe...

In a rough pipe of diameter 90 mm, the velocity of flow increases by 20% as the pitot tube is moved from a point 2.5 cm to a point 1 cm from the pipe wall. Determine the height of roughness.

A pipe carrying water has turbulent flow with shear stress 20 N/m2 and surface irregularity k = 0 3. mm. Determine whether the pipe behaves as hydrodynamically rough or smooth, if the kinematic viscosity of fluid is one stoke.