Example:

Water is agitated with a standard Rushton Turbine with $T=2m.$

In the fully turbulent region, for this impellor, the Power Number may be taken as $6\mathrm{.}0$

$P_0=\frac{p}{N^3{D}^5}$

Calculate the power requirement if the tip speed of the agitator is to be $3\frac{m}{s}$

What speed should the impelior diameter be driven at in a geometrically similar $4m$ diameter tank on the basis of equal power per unit volume.