Calculate the friction factor, maximum velocity as well as shear stress at the boundary.

(10 marks) May-2018

Subject Fluid Mechanics 2

Topic Turbulent Flow

Difficulty Medium

Given :

Dia. of pipe, D = 100 mm = 0.1m,

$\therefore$ Radius R = 0.05 m

Discharge, Q = 2.27 $m^3/min = \frac{2.27}{60} = 0.0378 m^3/s$

kinematic viscosity,

v = 0.0098 stokes = 0.0098 $cm^{2/s}$

$= 0.0098 \times 10^{-4} m^{2/s}$

Now, avg. velocity is $ū = \frac{Q}{A}$

i.e $ū …