Abstract
Mixing time in spherical and tapered baths agitated by bottom gas injection was measured in the presence of a swirl motion of the deep-water wave type. The measured values of the mixing time were compared with empirical equations proposed for the most commonly used cylindrical baths. When the aspect ratio of the bath, HL/D was smaller than 0.5, the mixing time in the spherical bath was the shortest, where HL is the bath depth and D is the bath diameter. On the other hand, when the aspect ratio was greater than 0.5, the tapered bath was the most suitable for mixing.
