Mechanical Separation and Cleaning

A cyclone separator of body diameter $D = 0.5\text{ m}$ treats air containing grain dust. Air enters at velocity $v_i = 15\text{ m/s}$ at radial radius $r = 0.2\text{ m}$. Centrifugal acceleration $a_c = v_i^2 / r = 15^2 / 0.2 = 225 / 0.2$ in $\text{m/s}^2$ is: