The placement of multiple feed points was simulated with the compartment models (section 2.2) of the tanks described above (Table ). As an initial design, the feed points were placed axially at positions (1 + 2 )/(2 ) relative to height as proposed in section 3.3, radially at 2/3 relative to radius, and tangentially evenly-spaced along the perimeter. As an example: with two feed points the dispersion model suggests axial locations 25 % and 75 % relative to height, with three points 17 %, 50 %, and 83 %, and with four points 13 %, 38 %, 63 %, and 88 %. Radial positions were at first varied between 50 % to 85 %, but the design was settled on 2/3 ≈ 67 %, which performed well and lied conveniently between the tank and impeller perimeters. The tangential division did not have any notable effect in these simulations.