Module 12: Agitation
  Lecture 40: Equipment, flow patterns, power requirement
 
 

Graphical results are available for different types of impellers to calculate power number:

 
(Fig. 40e)

(Slop is -1 on log–log plot for )

  • As in the case of tubular flow flow, viscous effects are predominant and density of fluid is not important at low Reynolds number.


(Tables are available to calculate )

Or
  • At high Reynolds number , power number is independent of the Reynolds number and viscosity is not important. Flow is fully turbulent.


Or
(Tables are available to calculate P)