Air bubblers are often used in a glass melting tank to improve circulation patterns and enhance the heat transfer rate from the combustion space to the molten glass, and from the molten glass to the batch. Because of the bubbles high velocity and short residence time in the glass tank, heat and mass transfer between the bubbles and the molten glass can be neglected. The momentum transfer between a column of air bubbles and the glass melt is calculated by taking into account the bubble size, bubble rise velocity, frequency of bubbling, bubbler height, and the thermophysical properties of air and the glass melt. The user can customize the model by adjusting one or more of these parameters through a user defined function.

Temperature contours on the walls of the glass tank and the velocity vectors through the plane of the bubblers.