An investigation of the effect of initial bubble diameter on the bubble trajectory in the flotation column cell using CFD simulation

The effect of initial bubble diameter on the motion pattern in a flotation column has been studied by twophase computational fluid dynamics (CFD) method. two-phase simulations have done using volume (VOF) model ANSYS® Fluent® software. field was square cross-section with width 0.1 m and height 1 into which air interred as single from lower part an internal sparger. An experimental test also performed simulated results validated values obtained for rise velocity. A comparison simulation confirmed that CFD can predict velocity profile its value less than 5% relative to values. Then repeated 20% decrease increase investigate flow pattern. investigations shown increases, decreases rises more zigzag direction result two counter-rotating trailing vortices behind increasing.