(Solved): A flat-blade turbine agitator with disk having six blades is installed in a conforming to the stan ...

A flat-blade turbine agitator with disk having six blades is installed in a conforming to the standard turbine tank design. The tank diameter Dt is \( 1.83 \mathrm{~m} \), the turbine diameter Da is \( 0.61 \) \( \mathrm{m}, \mathrm{Dt}=\mathrm{H} \), and the width \( \mathrm{W} \) is \( 0.122 \mathrm{~m} \). The tank contains four baffles, each having a width \( \mathrm{J} \) of \( 0.15 \mathrm{~m} \). The turbine is operated at \( 90 \mathrm{rpm} \) and the liquid in the tank has a viscosity of \( 10 \mathrm{cp} \) and a density of \( 929 \mathrm{~kg} / \mathrm{m} 3 \). 4.1. Calculate the required power( \( \mathrm{kW}) \). (15) 4.2. For the same conditions, except for the solution having a viscosity of \( 100000 \mathrm{cp} \), calculate the required power( \( \mathrm{kW}) \). In 1 or 2 lines comment on the effect of viscosity on required power. (5)