Fluid Dynamics

The theoretical power required can be calculated using the formula:

P%20%3D%20%5Cfrac%7BG%5E2%20%5Ccdot%20%5Cmu%20%5Ccdot%20V%7D%7B%5Crho%7D

where:
-

G

is the velocity gradient,
-

%5Cmu

is the dynamic viscosity,
-

V

is the volume of the tank,
-

%5Crho

is the density of water.
Substituting the given values and solving for the power, we get:

P%20%3D%20%5Cfrac%7B(800)%5E2%20%5Ctimes%209%20%5Ctimes%2010%5E%7B-4%7D%20%5Ctimes%2040%7D%7B1000%7D%20%3D%2023%20%5Ctext%7B%20kW%7D.

Thus, the power required is

23%20%5C%2C%20%5Ctext%7BkW%7D

Chapter Questions
1 MCQs