Oil of absolute viscosity 1.5 poise and density 848.3 kg/m3 flows through a ` 30` cm I.D. pipe. If head loss in `3000` m length of pipe is `20` m, assuming a laminar flow, determine :

1. velocity, 
2. Reynolds number and 
3. friction factor (Fanningâ??s).
   

 An oil of viscosity 9 poise and specific gravity 0.9 is flowing through a horizontal pipe of 60 mm diameter. If the pressure drop in 100 m length of the pipe is `1800 (kN)/m^2`, determine:

• The rate of flow of oil
• The centre line velocity
•  The total frictional drag over 100 m length
• The power required to maintain the flow
• The velocity gradient at the pipe wall
• The velocity and shear stress at the pipe wall
• The velocity and shear stress at 8mm from the wall.

Oil of absolute viscosity 1.5 poise and density 848.3 kg/m3 flows through a ` 30` cm I.D. pipe. If head loss in `3000` m length of pipe is `20` m, assuming a laminar flow, determine :

1. velocity, 
2. Reynolds number and 
3. friction factor (Fanningâ??s).