Figure 1. 3D view of the MBC agitator. (1) Fixed ring; (2) Connective blades; (3) Long blades; (4) Short blades.
Figure 2 shows schematic diagrams of the experimental setup. The stirred tank used in this study is a flat-bottomed, cylindrical Plexiglas vessel. To minimize the optical refraction, the cylindrical tank was placed in a large rectangular tank and the gap between them was filled with water, which was also the working fluid. The tank, with a diameter (T ) of 200mm, was equipped with four baffles (W =0.1T ), and was filled with water up toH= 1.5T . The off-bottom clearance kept a constant value ofC/T = 0.1.