The bubbles movement during refining process of aluminum alloy by rotary pulse ventilation was analyzed

and the motion behavior of bubbles in the liquid was simulated by using the numerical simulation with the model of VOF to analyze the effects of liquid properties on the bubbles formation and ascending process.The results show that the bubbles experience nucleation and growth process.The bubbles exhibit spherical structure at the initial stage of nucleation

and the shape of the bubbles is changed from spherical to ellipsoidal during the subsequent process of detachment and growth.With the increase of viscosity

the shape of the bubbles tends to be spherical

and the curvature running track tends to be straight line.Meanwhile

with the increase of surface tension

the bubbles are increasingly difficult to be deformed

leading to the bubble collapsed later

even not broken.