COMPUTATIONAL MODELING OF BUBBLE GROWTH FROM A SUBMERGED ORIFICE WITH CONSTANT AIRFLOW RATE

This study investigated the single bubble evolution in immersed orifice with a view the effect of bubble shape changes with time and variation of pressure in the liquid during the bubble move upward during the bubble growth, pinch-off region and detachment has been investigated by using computational fluid dynamics. The orifice diameter varies from 0.5mm to 2mm. Measurement of an arc is created and Young- Laplace equation has used to the estimation of the pressure of liquid varies in the gas liquid surface where the bubble is evolved. The present wok is focused on different wetting conditions at low gas flow rate and wetting region of the orifice with orifice base was studied for the working fluid of air and water at ???????????? . Analytical simulations of bubble formation with constant flow rate and constant gravity where the formation of bubble occurred when the inertia force is going to be leading force which was coupled with level set and volume of fluid (CLSVOF). Simulation data on the transition of bubble formation by using the capillary number with different wetting condition.