2009 Volume 95 Issue 12 Pages 837-843
Particle image velocimetry measurements have been carried out to understand the characteristics of fluid flow containing low-density particles in a bath under mechanical offset agitation with an immersion cylinder. The particles disperse deeply and widely in the bath under this agitation method. The water flow pattern does not change drastically with the immersion cylinder. The tip of the vortex tube however shifts from the center of the rotation axis of the impeller to the tip of the impeller blade. The dispersion of low-density particles is highly enhanced by this vortex tip shift.